{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-27586", "tracking": { "current_release_date": "2026-03-26T18:51:35.583436Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-27586", "initial_release_date": "2026-02-24T16:38:34.676368Z", "revision_history": [ { "date": "2026-02-24T16:38:34.676368Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (3).| CWES updated (1)." }, { "date": "2026-02-24T16:38:37.677024Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-02-24T18:26:26.763365Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-02-24T18:26:29.805933Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-02-24T20:39:52.543698Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (6).| CWES updated (1)." }, { "date": "2026-02-24T20:40:05.049072Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-02-25T00:12:56.625380Z", "number": "7", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (1).| References created (5).| CWES updated (1)." }, { "date": "2026-02-25T00:20:06.521821Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (70).| Products created (24).| References created (5).| CWES updated (1)." }, { "date": "2026-02-25T00:42:40.384150Z", "number": "9", "summary": "Source created.| CVE status created. (valid)| Products connected (1)." }, { "date": "2026-02-25T00:42:42.287978Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-02-25T06:42:54.164619Z", "number": "11", "summary": "Description created for source." }, { "date": "2026-02-25T15:13:52.525859Z", "number": "12", "summary": "Source created.| CVE status created. (valid)| EPSS created." }, { "date": "2026-02-25T15:13:55.053385Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-02-25T17:27:57.139357Z", "number": "14", "summary": "CVSS created.| Products connected (1).| Product Identifiers created (1).| Exploits created (2)." }, { "date": "2026-02-25T17:28:08.902909Z", "number": "15", "summary": "NCSC Score updated." }, { "date": "2026-02-26T21:49:55.193894Z", "number": "16", "summary": "Unknown change." }, { "date": "2026-02-26T21:49:56.662951Z", "number": "17", "summary": "NCSC Score updated." }, { "date": "2026-02-27T00:12:56.123936Z", "number": "18", "summary": "Source created.| CVE status created. (valid)| Description created for source.| References created (4)." }, { "date": "2026-02-27T20:39:35.484908Z", "number": "19", "summary": "References created (1)." }, { "date": "2026-02-28T06:12:54.962252Z", "number": "20", "summary": "References created (1)." }, { "date": "2026-02-28T06:29:51.987348Z", "number": "21", "summary": "Products connected (94)." }, { "date": "2026-02-28T06:30:11.026405Z", "number": "22", "summary": "NCSC Score updated." }, { "date": "2026-02-28T19:39:48.249953Z", "number": "23", "summary": "Products removed (94)." }, { "date": "2026-02-28T19:40:03.273707Z", "number": "24", "summary": "NCSC Score updated." }, { "date": "2026-03-20T09:40:39.082391Z", "number": "25", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-20T09:40:42.169416Z", "number": "26", "summary": "NCSC Score updated." }, { "date": "2026-03-26T02:10:27.884801Z", "number": "27", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (12).| Product Identifiers created (10).| References created (5)." }, { "date": "2026-03-26T02:10:32.170817Z", "number": "28", "summary": "NCSC Score updated." }, { "date": "2026-03-26T18:47:45.213249Z", "number": "29", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (2).| References created (8).| CWES updated (1)." }, { "date": "2026-03-26T18:47:48.959557Z", "number": "30", "summary": "NCSC Score updated." }, { "date": "2026-03-26T18:48:00.862817Z", "number": "31", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (2).| References created (7).| CWES updated (1)." } ], "status": "interim", "version": "31" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<2.11.1", "product": { "name": "vers:unknown/<2.11.1", "product_id": "CSAFPID-5688699", "product_identification_helper": { "cpe": "cpe:2.3:a:caddyserver:caddy:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=0|<2.11.1", "product": { "name": "vers:unknown/>=0|<2.11.1", "product_id": "CSAFPID-5700114" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0", "product": { "name": "vers:unknown/v2.0.0", "product_id": "CSAFPID-4034332" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta.13", "product": { "name": "vers:unknown/v2.0.0-beta.13", "product_id": "CSAFPID-4034342" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta.14", "product": { "name": "vers:unknown/v2.0.0-beta.14", "product_id": "CSAFPID-4034343" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta.15", "product": { "name": "vers:unknown/v2.0.0-beta.15", "product_id": "CSAFPID-4034344" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta.16", "product": { "name": "vers:unknown/v2.0.0-beta.16", "product_id": "CSAFPID-4034345" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta.17", "product": { "name": "vers:unknown/v2.0.0-beta.17", "product_id": "CSAFPID-4034346" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta.18", "product": { "name": "vers:unknown/v2.0.0-beta.18", "product_id": "CSAFPID-4034347" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta.19", "product": { "name": "vers:unknown/v2.0.0-beta.19", "product_id": "CSAFPID-4034348" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta.20", "product": { "name": "vers:unknown/v2.0.0-beta.20", "product_id": "CSAFPID-4034349" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta1", "product": { "name": "vers:unknown/v2.0.0-beta1", "product_id": "CSAFPID-4034350" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta10", "product": { "name": "vers:unknown/v2.0.0-beta10", "product_id": "CSAFPID-4034351" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta11", "product": { "name": "vers:unknown/v2.0.0-beta11", "product_id": "CSAFPID-4034352" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta12", "product": { "name": "vers:unknown/v2.0.0-beta12", "product_id": "CSAFPID-4034353" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta2", "product": { "name": "vers:unknown/v2.0.0-beta2", "product_id": "CSAFPID-4034354" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta3", "product": { "name": "vers:unknown/v2.0.0-beta3", "product_id": "CSAFPID-4034355" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta4", "product": { "name": "vers:unknown/v2.0.0-beta4", "product_id": "CSAFPID-4034356" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta5", "product": { "name": "vers:unknown/v2.0.0-beta5", "product_id": "CSAFPID-4034357" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta6", "product": { "name": "vers:unknown/v2.0.0-beta6", "product_id": "CSAFPID-4034358" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta7", "product": { "name": "vers:unknown/v2.0.0-beta7", "product_id": "CSAFPID-4034359" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta8", "product": { "name": "vers:unknown/v2.0.0-beta8", "product_id": "CSAFPID-4034360" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-beta9", "product": { "name": "vers:unknown/v2.0.0-beta9", "product_id": "CSAFPID-4034361" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-rc.1", "product": { "name": "vers:unknown/v2.0.0-rc.1", "product_id": "CSAFPID-4034362" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-rc.2", "product": { "name": "vers:unknown/v2.0.0-rc.2", "product_id": "CSAFPID-4034363" } }, { "category": "product_version_range", "name": "vers:unknown/v2.0.0-rc.3", "product": { "name": "vers:unknown/v2.0.0-rc.3", "product_id": "CSAFPID-4034364" } }, { "category": "product_version_range", "name": "vers:unknown/v2.1.0", "product": { "name": "vers:unknown/v2.1.0", "product_id": "CSAFPID-4034378" } }, { "category": "product_version_range", "name": "vers:unknown/v2.1.0-beta.1", "product": { "name": "vers:unknown/v2.1.0-beta.1", "product_id": "CSAFPID-4034379" } }, { "category": "product_version_range", "name": "vers:unknown/v2.1.0-beta.2", "product": { "name": "vers:unknown/v2.1.0-beta.2", "product_id": "CSAFPID-4034380" } }, { "category": "product_version_range", "name": "vers:unknown/v2.1.1", "product": { "name": "vers:unknown/v2.1.1", "product_id": "CSAFPID-4034387" } }, { "category": "product_version_range", "name": "vers:unknown/v2.10.0", "product": { "name": "vers:unknown/v2.10.0", "product_id": "CSAFPID-5700154" } }, { "category": "product_version_range", "name": "vers:unknown/v2.10.0-beta.1", "product": { "name": "vers:unknown/v2.10.0-beta.1", "product_id": "CSAFPID-5700155" } }, { "category": "product_version_range", "name": "vers:unknown/v2.10.0-beta.2", "product": { "name": "vers:unknown/v2.10.0-beta.2", "product_id": "CSAFPID-5700156" } }, { "category": "product_version_range", "name": "vers:unknown/v2.10.0-beta.3", "product": { "name": "vers:unknown/v2.10.0-beta.3", "product_id": "CSAFPID-5700157" } }, { "category": "product_version_range", "name": "vers:unknown/v2.10.0-beta.4", "product": { "name": "vers:unknown/v2.10.0-beta.4", "product_id": "CSAFPID-5700158" } }, { "category": "product_version_range", "name": "vers:unknown/v2.10.1", "product": { "name": "vers:unknown/v2.10.1", "product_id": "CSAFPID-5700159" } }, { "category": "product_version_range", "name": "vers:unknown/v2.10.2", "product": { "name": "vers:unknown/v2.10.2", "product_id": "CSAFPID-5700160" } }, { "category": "product_version_range", "name": "vers:unknown/v2.11.0", "product": { "name": "vers:unknown/v2.11.0", "product_id": "CSAFPID-5700161" } }, { "category": "product_version_range", "name": "vers:unknown/v2.11.0-beta.1", "product": { "name": "vers:unknown/v2.11.0-beta.1", "product_id": "CSAFPID-5700162" } }, { "category": "product_version_range", "name": "vers:unknown/v2.11.0-beta.2", "product": { "name": "vers:unknown/v2.11.0-beta.2", "product_id": "CSAFPID-5700163" } }, { "category": "product_version_range", "name": "vers:unknown/v2.2.0", "product": { "name": "vers:unknown/v2.2.0", "product_id": "CSAFPID-4034396" } }, { "category": "product_version_range", "name": "vers:unknown/v2.2.0-rc.1", "product": { "name": "vers:unknown/v2.2.0-rc.1", "product_id": "CSAFPID-4034400" } }, { "category": "product_version_range", "name": "vers:unknown/v2.2.0-rc.2", "product": { "name": "vers:unknown/v2.2.0-rc.2", "product_id": "CSAFPID-4034401" } }, { "category": "product_version_range", "name": "vers:unknown/v2.2.0-rc.3", "product": { "name": "vers:unknown/v2.2.0-rc.3", "product_id": "CSAFPID-4034402" } }, { "category": "product_version_range", "name": "vers:unknown/v2.2.1", "product": { "name": "vers:unknown/v2.2.1", "product_id": "CSAFPID-4034407" } }, { "category": "product_version_range", "name": "vers:unknown/v2.2.3", "product": { "name": "vers:unknown/v2.2.3", "product_id": "CSAFPID-4034411" } }, { "category": "product_version_range", "name": "vers:unknown/v2.3.0", "product": { "name": "vers:unknown/v2.3.0", "product_id": "CSAFPID-4034417" } }, { "category": "product_version_range", "name": "vers:unknown/v2.3.0-beta.1", "product": { "name": "vers:unknown/v2.3.0-beta.1", "product_id": "CSAFPID-4034418" } }, { "category": "product_version_range", "name": "vers:unknown/v2.3.0-rc.1", "product": { "name": "vers:unknown/v2.3.0-rc.1", "product_id": "CSAFPID-4034419" } }, { "category": "product_version_range", "name": "vers:unknown/v2.3.0-rc.2", "product": { "name": "vers:unknown/v2.3.0-rc.2", "product_id": "CSAFPID-4034420" } }, { "category": "product_version_range", "name": "vers:unknown/v2.4.0", "product": { "name": "vers:unknown/v2.4.0", "product_id": "CSAFPID-4034435" } }, { "category": "product_version_range", "name": "vers:unknown/v2.4.0-beta.1", "product": { "name": "vers:unknown/v2.4.0-beta.1", "product_id": "CSAFPID-4034436" } }, { "category": "product_version_range", "name": "vers:unknown/v2.4.0-beta.2", "product": { "name": "vers:unknown/v2.4.0-beta.2", "product_id": "CSAFPID-4034437" } }, { "category": "product_version_range", "name": "vers:unknown/v2.4.0-rc.1", "product": { "name": "vers:unknown/v2.4.0-rc.1", "product_id": "CSAFPID-4034438" } }, { "category": "product_version_range", "name": "vers:unknown/v2.4.1", "product": { "name": "vers:unknown/v2.4.1", "product_id": "CSAFPID-4034441" } }, { "category": "product_version_range", "name": "vers:unknown/v2.4.2", "product": { "name": "vers:unknown/v2.4.2", "product_id": "CSAFPID-4034447" } }, { "category": "product_version_range", "name": "vers:unknown/v2.4.3", "product": { "name": "vers:unknown/v2.4.3", "product_id": "CSAFPID-4034448" } }, { "category": "product_version_range", "name": "vers:unknown/v2.4.4", "product": { "name": "vers:unknown/v2.4.4", "product_id": "CSAFPID-4034449" } }, { "category": "product_version_range", "name": "vers:unknown/v2.4.5", "product": { "name": "vers:unknown/v2.4.5", "product_id": "CSAFPID-4034450" } }, { "category": "product_version_range", "name": "vers:unknown/v2.4.6", "product": { "name": "vers:unknown/v2.4.6", "product_id": "CSAFPID-4034451" } }, { "category": "product_version_range", "name": "vers:unknown/v2.5.0", "product": { "name": "vers:unknown/v2.5.0", "product_id": "CSAFPID-4034455" } }, { "category": "product_version_range", "name": "vers:unknown/v2.5.0-beta.1", "product": { "name": "vers:unknown/v2.5.0-beta.1", "product_id": "CSAFPID-4034456" } }, { "category": "product_version_range", "name": "vers:unknown/v2.5.0-rc.1", "product": { "name": "vers:unknown/v2.5.0-rc.1", "product_id": "CSAFPID-4034457" } }, { "category": "product_version_range", "name": "vers:unknown/v2.5.1", "product": { "name": "vers:unknown/v2.5.1", "product_id": "CSAFPID-4034464" } }, { "category": "product_version_range", "name": "vers:unknown/v2.5.2", "product": { "name": "vers:unknown/v2.5.2", "product_id": "CSAFPID-4034465" } }, { "category": "product_version_range", "name": "vers:unknown/v2.6.0", "product": { "name": "vers:unknown/v2.6.0", "product_id": "CSAFPID-4034466" } }, { "category": "product_version_range", "name": "vers:unknown/v2.6.0-beta.1", "product": { "name": "vers:unknown/v2.6.0-beta.1", "product_id": "CSAFPID-4034467" } }, { "category": "product_version_range", "name": "vers:unknown/v2.6.0-beta.2", "product": { "name": "vers:unknown/v2.6.0-beta.2", "product_id": "CSAFPID-4034468" } }, { "category": "product_version_range", "name": "vers:unknown/v2.6.0-beta.3", "product": { "name": "vers:unknown/v2.6.0-beta.3", "product_id": "CSAFPID-4034469" } }, { "category": "product_version_range", "name": "vers:unknown/v2.6.0-beta.4", "product": { "name": "vers:unknown/v2.6.0-beta.4", "product_id": "CSAFPID-4034470" } }, { "category": "product_version_range", "name": "vers:unknown/v2.6.0-beta.5", "product": { "name": "vers:unknown/v2.6.0-beta.5", "product_id": "CSAFPID-4034471" } }, { "category": "product_version_range", "name": "vers:unknown/v2.6.1", "product": { "name": "vers:unknown/v2.6.1", "product_id": "CSAFPID-4034472" } }, { "category": "product_version_range", "name": "vers:unknown/v2.6.2", "product": { "name": "vers:unknown/v2.6.2", "product_id": "CSAFPID-4034473" } }, { "category": "product_version_range", "name": "vers:unknown/v2.6.3", "product": { "name": "vers:unknown/v2.6.3", "product_id": "CSAFPID-4034474" } }, { "category": "product_version_range", "name": "vers:unknown/v2.6.4", "product": { "name": "vers:unknown/v2.6.4", "product_id": "CSAFPID-4034475" } }, { "category": "product_version_range", "name": "vers:unknown/v2.7.0", "product": { "name": "vers:unknown/v2.7.0", "product_id": "CSAFPID-4034476" } }, { "category": "product_version_range", "name": "vers:unknown/v2.7.0-beta.1", "product": { "name": "vers:unknown/v2.7.0-beta.1", "product_id": "CSAFPID-4034477" } }, { "category": "product_version_range", "name": "vers:unknown/v2.7.0-beta.2", "product": { "name": "vers:unknown/v2.7.0-beta.2", "product_id": "CSAFPID-4034478" } }, { "category": "product_version_range", "name": "vers:unknown/v2.7.1", "product": { "name": "vers:unknown/v2.7.1", "product_id": "CSAFPID-4034479" } }, { "category": "product_version_range", "name": "vers:unknown/v2.7.2", "product": { "name": "vers:unknown/v2.7.2", "product_id": "CSAFPID-4034480" } }, { "category": "product_version_range", "name": "vers:unknown/v2.7.3", "product": { "name": "vers:unknown/v2.7.3", "product_id": "CSAFPID-4034481" } }, { "category": "product_version_range", "name": "vers:unknown/v2.7.4", "product": { "name": "vers:unknown/v2.7.4", "product_id": "CSAFPID-4034482" } }, { "category": "product_version_range", "name": "vers:unknown/v2.7.5", "product": { "name": "vers:unknown/v2.7.5", "product_id": "CSAFPID-5700164" } }, { "category": "product_version_range", "name": "vers:unknown/v2.8.0", "product": { "name": "vers:unknown/v2.8.0", "product_id": "CSAFPID-5700165" } }, { "category": "product_version_range", "name": "vers:unknown/v2.8.0-beta.1", "product": { "name": "vers:unknown/v2.8.0-beta.1", "product_id": "CSAFPID-5700166" } }, { "category": "product_version_range", "name": "vers:unknown/v2.8.0-beta.2", "product": { "name": "vers:unknown/v2.8.0-beta.2", "product_id": "CSAFPID-5700167" } }, { "category": "product_version_range", "name": "vers:unknown/v2.8.0-rc.1", "product": { "name": "vers:unknown/v2.8.0-rc.1", "product_id": "CSAFPID-5700168" } }, { "category": "product_version_range", "name": "vers:unknown/v2.8.1", "product": { "name": "vers:unknown/v2.8.1", "product_id": "CSAFPID-5700169" } }, { "category": "product_version_range", "name": "vers:unknown/v2.8.2", "product": { "name": "vers:unknown/v2.8.2", "product_id": "CSAFPID-5700170" } }, { "category": "product_version_range", "name": "vers:unknown/v2.8.3", "product": { "name": "vers:unknown/v2.8.3", "product_id": "CSAFPID-5700171" } }, { "category": "product_version_range", "name": "vers:unknown/v2.8.4", "product": { "name": "vers:unknown/v2.8.4", "product_id": "CSAFPID-5700172" } }, { "category": "product_version_range", "name": "vers:unknown/v2.9.0", "product": { "name": "vers:unknown/v2.9.0", "product_id": "CSAFPID-5700173" } }, { "category": "product_version_range", "name": "vers:unknown/v2.9.0-beta.1", "product": { "name": "vers:unknown/v2.9.0-beta.1", "product_id": "CSAFPID-5700174" } }, { "category": "product_version_range", "name": "vers:unknown/v2.9.0-beta.2", "product": { "name": "vers:unknown/v2.9.0-beta.2", "product_id": "CSAFPID-5700175" } }, { "category": "product_version_range", "name": "vers:unknown/v2.9.0-beta.3", "product": { "name": "vers:unknown/v2.9.0-beta.3", "product_id": "CSAFPID-5700176" } }, { "category": "product_version_range", "name": "vers:unknown/v2.9.1", "product": { "name": "vers:unknown/v2.9.1", "product_id": "CSAFPID-5700177" } } ], "category": "product_name", "name": "Caddy" } ], "category": "vendor", "name": "Caddyserver" }, { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/unknown", "product": { "name": "vers:deb/unknown", "product_id": "CSAFPID-5700549" } } ], "category": "product_name", "name": "caddy" } ], "category": "product_family", "name": "bookworm" } ], "category": "vendor", "name": "Debian" }, { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/2.6.2-11", "product": { "name": "vers:unknown/2.6.2-11", "product_id": "CSAFPID-5913758", "product_identification_helper": { "purl": "pkg:deb/ubuntu/caddy@2.6.2-11?arch=source&distro=questing" } } }, { "category": "product_version_range", "name": "vers:unknown/2.6.2-12", "product": { "name": "vers:unknown/2.6.2-12", "product_id": "CSAFPID-5913759", "product_identification_helper": { "purl": "pkg:deb/ubuntu/caddy@2.6.2-12?arch=source&distro=questing" } } }, { "category": "product_version_range", "name": "vers:unknown/2.6.2-9", "product": { "name": "vers:unknown/2.6.2-9", "product_id": "CSAFPID-5913757", "product_identification_helper": { "purl": "pkg:deb/ubuntu/caddy@2.6.2-9?arch=source&distro=questing" } } }, { "category": "product_version_range", "name": "vers:unknown/>=0", "product": { "name": "vers:unknown/>=0", "product_id": "CSAFPID-5913760" } } ], "category": "product_name", "name": "caddy" } ], "category": "product_family", "name": "Ubuntu:25.10" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/2.6.2-6", "product": { "name": "vers:unknown/2.6.2-6", "product_id": "CSAFPID-5913749", "product_identification_helper": { "purl": "pkg:deb/ubuntu/caddy@2.6.2-6?arch=source&distro=esm-apps/noble" } } }, { "category": "product_version_range", "name": "vers:unknown/2.6.2-6ubuntu0.24.04.1", "product": { "name": "vers:unknown/2.6.2-6ubuntu0.24.04.1", "product_id": "CSAFPID-5913750", "product_identification_helper": { "purl": "pkg:deb/ubuntu/caddy@2.6.2-6ubuntu0.24.04.1?arch=source&distro=esm-apps/noble" } } }, { "category": "product_version_range", "name": "vers:unknown/2.6.2-6ubuntu0.24.04.2", "product": { "name": "vers:unknown/2.6.2-6ubuntu0.24.04.2", "product_id": "CSAFPID-5913751", "product_identification_helper": { "purl": "pkg:deb/ubuntu/caddy@2.6.2-6ubuntu0.24.04.2?arch=source&distro=esm-apps/noble" } } }, { "category": "product_version_range", "name": "vers:unknown/2.6.2-6ubuntu0.24.04.2+esm1", "product": { "name": "vers:unknown/2.6.2-6ubuntu0.24.04.2+esm1", "product_id": "CSAFPID-5913752", "product_identification_helper": { "purl": "pkg:deb/ubuntu/caddy@2.6.2-6ubuntu0.24.04.2%2Besm1?arch=source&distro=esm-apps/noble" } } }, { "category": "product_version_range", "name": "vers:unknown/2.6.2-6ubuntu0.24.04.3", "product": { "name": "vers:unknown/2.6.2-6ubuntu0.24.04.3", "product_id": "CSAFPID-5913753", "product_identification_helper": { "purl": "pkg:deb/ubuntu/caddy@2.6.2-6ubuntu0.24.04.3?arch=source&distro=esm-apps/noble" } } }, { "category": "product_version_range", "name": "vers:unknown/2.6.2-6ubuntu0.24.04.3+esm1", "product": { "name": "vers:unknown/2.6.2-6ubuntu0.24.04.3+esm1", "product_id": "CSAFPID-5913754", "product_identification_helper": { "purl": "pkg:deb/ubuntu/caddy@2.6.2-6ubuntu0.24.04.3%2Besm1?arch=source&distro=esm-apps/noble" } } }, { "category": "product_version_range", "name": "vers:unknown/2.6.2-6ubuntu0.24.04.3+esm2", "product": { "name": "vers:unknown/2.6.2-6ubuntu0.24.04.3+esm2", "product_id": "CSAFPID-5913755", "product_identification_helper": { "purl": "pkg:deb/ubuntu/caddy@2.6.2-6ubuntu0.24.04.3%2Besm2?arch=source&distro=esm-apps/noble" } } }, { "category": "product_version_range", "name": "vers:unknown/>=0", "product": { "name": "vers:unknown/>=0", "product_id": "CSAFPID-5913756" } } ], "category": "product_name", "name": "caddy" } ], "category": "product_family", "name": "Ubuntu:Pro:24.04:LTS" } ], "category": "vendor", "name": "Ubuntu" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/2.11.1", "product": { "name": "vers:unknown/2.11.1", "product_id": "CSAFPID-5918973" } }, { "category": "product_version_range", "name": "vers:unknown/<2.11.1", "product": { "name": "vers:unknown/<2.11.1", "product_id": "CSAFPID-5918974" } } ], "category": "product_name", "name": "go/github.com/caddyserver/caddy/v2" } ], "category": "vendor", "name": "caddy" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/2.11.1", "product": { "name": "vers:unknown/2.11.1", "product_id": "CSAFPID-5918981" } }, { "category": "product_version_range", "name": "vers:unknown/<2.11.1", "product": { "name": "vers:unknown/<2.11.1", "product_id": "CSAFPID-5918982" } } ], "category": "product_name", "name": "go/github.com/caddyserver/caddy/v2/modules/caddytls" } ], "category": "vendor", "name": "modules" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-27586", "notes": [ { "category": "description", "text": "Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, two swallowed errors in `ClientAuthentication.provision()` cause mTLS client certificate authentication to silently fail open when a CA certificate file is missing, unreadable, or malformed. The server starts without error but accepts any client certificate signed by any system-trusted CA, completely bypassing the intended private CA trust boundary. Any deployment using `trusted_ca_cert_file` or `trusted_ca_certs_pem_files` for mTLS will silently degrade to accepting any system-trusted client certificate if the CA file becomes unavailable. This can happen due to a typo in the path, file rotation, corruption, or permission changes. The server gives no indication that mTLS is misconfigured. Version 2.11.1 fixes the vulnerability.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-27586" }, { "category": "description", "text": "Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, two swallowed errors in `ClientAuthentication.provision()` cause mTLS client certificate authentication to silently fail open when a CA certificate file is missing, unreadable, or malformed. The server starts without error but accepts any client certificate signed by any system-trusted CA, completely bypassing the intended private CA trust boundary. Any deployment using `trusted_ca_cert_file` or `trusted_ca_certs_pem_files` for mTLS will silently degrade to accepting any system-trusted client certificate if the CA file becomes unavailable. This can happen due to a typo in the path, file rotation, corruption, or permission changes. The server gives no indication that mTLS is misconfigured. Version 2.11.1 fixes the vulnerability.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-27586" }, { "category": "description", "text": "### Summary\n\nTwo swallowed errors in `ClientAuthentication.provision()` cause mTLS client certificate authentication to silently fail open when a CA certificate file is missing, unreadable, or malformed. The server starts without error but accepts any client certificate signed by any system-trusted CA, completely bypassing the intended private CA trust boundary.\n\n### Details\n\nIn `modules/caddytls/connpolicy.go`, the `provision()` method has two `return nil` statements that should be `return err`:\n\n**Bug #1 — line 787:**\n```go\nders, err := convertPEMFilesToDER(fpath)\nif err != nil {\n return nil // BUG: should be \"return err\"\n}\n```\n\n**Bug #2 — line 800:**\n```go\nerr := caPool.Provision(ctx)\nif err != nil {\n return nil // BUG: should be \"return err\"\n}\n```\n\nCompare with line 811 which correctly returns the error:\n```go\ncaRaw, err := ctx.LoadModule(clientauth, \"CARaw\")\nif err != nil {\n return err // CORRECT\n}\n```\n\nWhen the error is swallowed on line 787, the chain is:\n\n1. `TrustedCACerts` remains empty (no DER data appended from the file)\n2. The `len(clientauth.TrustedCACerts) > 0` guard on line 794 is false — skipped\n3. `clientauth.CARaw` is nil — line 806 returns nil\n4. `clientauth.ca` remains nil — no CA pool was created\n5. `provision()` returns nil — caller thinks provisioning succeeded\n\nThen in `ConfigureTLSConfig()`:\n\n6. `Active()` returns true because `TrustedCACertPEMFiles` is non-empty\n7. Default mode is set to `RequireAndVerifyClientCert` (line 860)\n8. But `clientauth.ca` is nil, so `cfg.ClientCAs` is never set (line 867 skipped)\n9. Go's `crypto/tls` with `RequireAndVerifyClientCert` + nil `ClientCAs` verifies client certs against the **system root pool** instead of the intended CA\n\nThe fix is changing `return nil` to `return err` on lines 787 and 800.\n\n### PoC\n\n1. Configure Caddy with mTLS pointing to a nonexistent CA file:\n\n```\n{\n \"apps\": {\n \"http\": {\n \"servers\": {\n \"srv0\": {\n \"listen\": [\":443\"],\n \"tls_connection_policies\": [{\n \"client_authentication\": {\n \"trusted_ca_certs_pem_files\": [\"/nonexistent/ca.pem\"]\n }\n }]\n }\n }\n }\n }\n}\n```\n\n2. Start Caddy — it starts without any error or warning.\n\n3. Connect with any client certificate (even self-signed):\n```bash\nopenssl s_client -connect localhost:443 -cert client.pem -key client-key.pem\n```\n\n4. The TLS handshake succeeds despite the certificate not being signed by the intended CA.\n\nA full Go test that proves the bug end-to-end (including a successful TLS handshake with a random self-signed client cert) is here: https://gist.github.com/moscowchill/9566c79c76c0b64c57f8bd0716f97c48\n\nTest output:\n```\n=== RUN TestSwallowedErrorMTLSFailOpen\n BUG CONFIRMED: provision() swallowed the error from a nonexistent CA file.\n tls.Config has RequireAndVerifyClientCert but ClientCAs is nil.\n CRITICAL: TLS handshake succeeded with a self-signed client cert!\n The server accepted a client certificate NOT signed by the intended CA.\n--- PASS: TestSwallowedErrorMTLSFailOpen (0.03s)\n```\n\n### Impact\n\nAny deployment using `trusted_ca_cert_file` or `trusted_ca_certs_pem_files` for mTLS will silently degrade to accepting any system-trusted client certificate if the CA file becomes unavailable. This can happen due to a typo in the path, file rotation, corruption, or permission changes. The server gives no indication that mTLS is misconfigured.", "title": "github - https://github.com/advisories/GHSA-hffm-g8v7-wrv7" }, { "category": "description", "text": "### Summary\n\nTwo swallowed errors in `ClientAuthentication.provision()` cause mTLS client certificate authentication to silently fail open when a CA certificate file is missing, unreadable, or malformed. The server starts without error but accepts any client certificate signed by any system-trusted CA, completely bypassing the intended private CA trust boundary.\n\n### Details\n\nIn `modules/caddytls/connpolicy.go`, the `provision()` method has two `return nil` statements that should be `return err`:\n\n**Bug #1 — line 787:**\n```go\nders, err := convertPEMFilesToDER(fpath)\nif err != nil {\n return nil // BUG: should be \"return err\"\n}\n```\n\n**Bug #2 — line 800:**\n```go\nerr := caPool.Provision(ctx)\nif err != nil {\n return nil // BUG: should be \"return err\"\n}\n```\n\nCompare with line 811 which correctly returns the error:\n```go\ncaRaw, err := ctx.LoadModule(clientauth, \"CARaw\")\nif err != nil {\n return err // CORRECT\n}\n```\n\nWhen the error is swallowed on line 787, the chain is:\n\n1. `TrustedCACerts` remains empty (no DER data appended from the file)\n2. The `len(clientauth.TrustedCACerts) > 0` guard on line 794 is false — skipped\n3. `clientauth.CARaw` is nil — line 806 returns nil\n4. `clientauth.ca` remains nil — no CA pool was created\n5. `provision()` returns nil — caller thinks provisioning succeeded\n\nThen in `ConfigureTLSConfig()`:\n\n6. `Active()` returns true because `TrustedCACertPEMFiles` is non-empty\n7. Default mode is set to `RequireAndVerifyClientCert` (line 860)\n8. But `clientauth.ca` is nil, so `cfg.ClientCAs` is never set (line 867 skipped)\n9. Go's `crypto/tls` with `RequireAndVerifyClientCert` + nil `ClientCAs` verifies client certs against the **system root pool** instead of the intended CA\n\nThe fix is changing `return nil` to `return err` on lines 787 and 800.\n\n### PoC\n\n1. Configure Caddy with mTLS pointing to a nonexistent CA file:\n\n```\n{\n \"apps\": {\n \"http\": {\n \"servers\": {\n \"srv0\": {\n \"listen\": [\":443\"],\n \"tls_connection_policies\": [{\n \"client_authentication\": {\n \"trusted_ca_certs_pem_files\": [\"/nonexistent/ca.pem\"]\n }\n }]\n }\n }\n }\n }\n}\n```\n\n2. Start Caddy — it starts without any error or warning.\n\n3. Connect with any client certificate (even self-signed):\n```bash\nopenssl s_client -connect localhost:443 -cert client.pem -key client-key.pem\n```\n\n4. The TLS handshake succeeds despite the certificate not being signed by the intended CA.\n\nA full Go test that proves the bug end-to-end (including a successful TLS handshake with a random self-signed client cert) is here: https://gist.github.com/moscowchill/9566c79c76c0b64c57f8bd0716f97c48\n\nTest output:\n```\n=== RUN TestSwallowedErrorMTLSFailOpen\n BUG CONFIRMED: provision() swallowed the error from a nonexistent CA file.\n tls.Config has RequireAndVerifyClientCert but ClientCAs is nil.\n CRITICAL: TLS handshake succeeded with a self-signed client cert!\n The server accepted a client certificate NOT signed by the intended CA.\n--- PASS: TestSwallowedErrorMTLSFailOpen (0.03s)\n```\n\n### Impact\n\nAny deployment using `trusted_ca_cert_file` or `trusted_ca_certs_pem_files` for mTLS will silently degrade to accepting any system-trusted client certificate if the CA file becomes unavailable. This can happen due to a typo in the path, file rotation, corruption, or permission changes. The server gives no indication that mTLS is misconfigured.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-hffm-g8v7-wrv7.json?alt=media" }, { "category": "description", "text": "Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, two swallowed errors in `ClientAuthentication.provision()` cause mTLS client certificate authentication to silently fail open when a CA certificate file is missing, unreadable, or malformed. The server starts without error but accepts any client certificate signed by any system-trusted CA, completely bypassing the intended private CA trust boundary. Any deployment using `trusted_ca_cert_file` or `trusted_ca_certs_pem_files` for mTLS will silently degrade to accepting any system-trusted client certificate if the CA file becomes unavailable. This can happen due to a typo in the path, file rotation, corruption, or permission changes. The server gives no indication that mTLS is misconfigured. Version 2.11.1 fixes the vulnerability.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-27586.json?alt=media" }, { "category": "description", "text": "Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, two swallowed errors in `ClientAuthentication.provision()` cause mTLS client certificate authentication to silently fail open when a CA certificate file is missing, unreadable, or malformed. The server starts without error but accepts any client certificate signed by any system-trusted CA, completely bypassing the intended private CA trust boundary. Any deployment using `trusted_ca_cert_file` or `trusted_ca_certs_pem_files` for mTLS will silently degrade to accepting any system-trusted client certificate if the CA file becomes unavailable. This can happen due to a typo in the path, file rotation, corruption, or permission changes. The server gives no indication that mTLS is misconfigured. Version 2.11.1 fixes the vulnerability.", "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-27586" }, { "category": "description", "text": "Caddy mTLS authentication fails open in github.com/caddyserver/caddy/v2", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGO-2026-4539.json?alt=media" }, { "category": "description", "text": "Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, two swallowed errors in `ClientAuthentication.provision()` cause mTLS client certificate authentication to silently fail open when a CA certificate file is missing, unreadable, or malformed. The server starts without error but accepts any client certificate signed by any system-trusted CA, completely bypassing the intended private CA trust boundary. Any deployment using `trusted_ca_cert_file` or `trusted_ca_certs_pem_files` for mTLS will silently degrade to accepting any system-trusted client certificate if the CA file becomes unavailable. This can happen due to a typo in the path, file rotation, corruption, or permission changes. The server gives no indication that mTLS is misconfigured. Version 2.11.1 fixes the vulnerability.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Ubuntu%2FUBUNTU-CVE-2026-27586.json?alt=media" }, { "category": "description", "text": "Two swallowed errors in `ClientAuthentication.provision()` cause mTLS client certificate authentication to silently fail open when a CA certificate file is missing, unreadable, or malformed. The server starts without error but accepts any client certificate signed by any system-trusted CA, completely bypassing the intended private CA trust boundary.", "title": "gitlab - https://gitlab.com/api/v4/projects/25847700/repository/files/go%2Fgithub.com%2Fcaddyserver%2Fcaddy%2Fv2%2FCVE-2026-27586.yml/raw" }, { "category": "description", "text": "Two swallowed errors in `ClientAuthentication.provision()` cause mTLS client certificate authentication to silently fail open when a CA certificate file is missing, unreadable, or malformed. The server starts without error but accepts any client certificate signed by any system-trusted CA, completely bypassing the intended private CA trust boundary.", "title": "gitlab - https://gitlab.com/api/v4/projects/25847700/repository/files/go%2Fgithub.com%2Fcaddyserver%2Fcaddy%2Fv2%2Fmodules%2Fcaddytls%2FCVE-2026-27586.yml/raw" }, { "category": "other", "text": "0.00082", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P", "title": "CVSSV4" }, { "category": "other", "text": "8.8", "title": "CVSSV4 base score" }, { "category": "other", "text": "3.9", "title": "NCSC Score" }, { "category": "other", "text": "Is related to a product by vendor Debian", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to (a version of) an uncommon product, The value of the most recent EPSS score, There is exploit data available from source Nvd", "title": "NCSC Score top decreasing factors" } ], "product_status": { "fixed": [ "CSAFPID-5918973", "CSAFPID-5918981" ], "known_affected": [ "CSAFPID-5688699", "CSAFPID-5700114", "CSAFPID-4034332", "CSAFPID-4034342", "CSAFPID-4034343", "CSAFPID-4034344", "CSAFPID-4034345", "CSAFPID-4034346", "CSAFPID-4034347", "CSAFPID-4034348", "CSAFPID-4034349", "CSAFPID-4034350", "CSAFPID-4034351", "CSAFPID-4034352", "CSAFPID-4034353", "CSAFPID-4034354", "CSAFPID-4034355", "CSAFPID-4034356", "CSAFPID-4034357", "CSAFPID-4034358", "CSAFPID-4034359", "CSAFPID-4034360", "CSAFPID-4034361", "CSAFPID-4034362", "CSAFPID-4034363", "CSAFPID-4034364", "CSAFPID-4034378", "CSAFPID-4034379", "CSAFPID-4034380", "CSAFPID-4034387", "CSAFPID-4034396", "CSAFPID-4034400", "CSAFPID-4034401", "CSAFPID-4034402", "CSAFPID-4034407", "CSAFPID-4034411", "CSAFPID-4034417", "CSAFPID-4034418", "CSAFPID-4034419", "CSAFPID-4034420", "CSAFPID-4034435", "CSAFPID-4034436", "CSAFPID-4034437", "CSAFPID-4034438", "CSAFPID-4034441", "CSAFPID-4034447", "CSAFPID-4034448", "CSAFPID-4034449", "CSAFPID-4034450", "CSAFPID-4034451", "CSAFPID-4034455", "CSAFPID-4034456", "CSAFPID-4034457", "CSAFPID-4034464", "CSAFPID-4034465", "CSAFPID-4034466", "CSAFPID-4034467", "CSAFPID-4034468", "CSAFPID-4034469", "CSAFPID-4034470", "CSAFPID-4034471", "CSAFPID-4034472", "CSAFPID-4034473", "CSAFPID-4034474", "CSAFPID-4034475", "CSAFPID-4034476", "CSAFPID-4034477", "CSAFPID-4034478", "CSAFPID-4034479", "CSAFPID-4034480", "CSAFPID-4034481", "CSAFPID-4034482", "CSAFPID-5700154", "CSAFPID-5700155", "CSAFPID-5700156", "CSAFPID-5700157", "CSAFPID-5700158", "CSAFPID-5700159", "CSAFPID-5700160", "CSAFPID-5700161", "CSAFPID-5700162", "CSAFPID-5700163", "CSAFPID-5700164", "CSAFPID-5700165", "CSAFPID-5700166", "CSAFPID-5700167", "CSAFPID-5700168", "CSAFPID-5700169", "CSAFPID-5700170", "CSAFPID-5700171", "CSAFPID-5700172", "CSAFPID-5700173", "CSAFPID-5700174", "CSAFPID-5700175", "CSAFPID-5700176", "CSAFPID-5700177", "CSAFPID-5700549", "CSAFPID-5913749", "CSAFPID-5913750", "CSAFPID-5913751", "CSAFPID-5913752", "CSAFPID-5913753", "CSAFPID-5913754", "CSAFPID-5913755", "CSAFPID-5913756", "CSAFPID-5913757", "CSAFPID-5913758", "CSAFPID-5913759", "CSAFPID-5913760", "CSAFPID-5918974", "CSAFPID-5918982" ] }, "references": [ { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-27586" }, { "category": "external", "summary": "Source raw - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/27xxx/CVE-2026-27586.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27586" }, { "category": "external", "summary": "Source raw - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-27586" }, { "category": "external", "summary": "Source - github", "url": "https://github.com/advisories/GHSA-hffm-g8v7-wrv7" }, { "category": "external", "summary": "Source raw - github", "url": "https://api.github.com/advisories/GHSA-hffm-g8v7-wrv7" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-hffm-g8v7-wrv7.json?alt=media" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-27586.json?alt=media" }, { "category": "external", "summary": "Source - debian", "url": "https://security-tracker.debian.org/tracker/CVE-2026-27586" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-27586" }, { "category": "external", "summary": "Source raw - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGO-2026-4539.json?alt=media" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Ubuntu%2FUBUNTU-CVE-2026-27586.json?alt=media" }, { "category": "external", "summary": "Source - gitlab", "url": "https://gitlab.com/api/v4/projects/25847700/repository/files/go%2Fgithub.com%2Fcaddyserver%2Fcaddy%2Fv2%2FCVE-2026-27586.yml/raw" }, { "category": "external", "summary": "Source - gitlab", "url": "https://gitlab.com/api/v4/projects/25847700/repository/files/go%2Fgithub.com%2Fcaddyserver%2Fcaddy%2Fv2%2Fmodules%2Fcaddytls%2FCVE-2026-27586.yml/raw" }, { "category": "external", "summary": "Reference - cveprojectv5; github; gitlab; nvd; osv", "url": "https://github.com/caddyserver/caddy/security/advisories/GHSA-hffm-g8v7-wrv7" }, { "category": "external", "summary": "Reference - cveprojectv5; github; gitlab; nvd; osv", "url": "https://gist.github.com/moscowchill/9566c79c76c0b64c57f8bd0716f97c48" }, { "category": "external", "summary": "Reference - cveprojectv5; github; gitlab; nvd; osv", "url": "https://github.com/caddyserver/caddy/releases/tag/v2.11.1" }, { "category": "external", "summary": "Reference - github; gitlab; osv", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27586" }, { "category": "external", "summary": "Reference - github; gitlab; osv", "url": "https://github.com/caddyserver/caddy/commit/d42d39b4bc237c628f9a95363b28044cb7a7fe72" }, { "category": "external", "summary": "Reference - github; gitlab", "url": "https://github.com/advisories/GHSA-hffm-g8v7-wrv7" }, { "category": "external", "summary": "Reference - osv", "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27586.json" }, { "category": "external", "summary": "Reference - github; gitlab; osv", "url": "https://pkg.go.dev/vuln/GO-2026-4539" }, { "category": "external", "summary": "Reference - osv", "url": "https://ubuntu.com/security/CVE-2026-27586" }, { "category": "external", "summary": "Reference - osv", "url": "https://www.cve.org/CVERecord?id=CVE-2026-27586" }, { "category": "external", "summary": "Reference - gitlab", "url": "https://github.com/caddyserver/caddy" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "baseScore": 9.1, "baseSeverity": "CRITICAL" }, "products": [ "CSAFPID-4034332", "CSAFPID-4034342", "CSAFPID-4034343", "CSAFPID-4034344", "CSAFPID-4034345", "CSAFPID-4034346", "CSAFPID-4034347", "CSAFPID-4034348", "CSAFPID-4034349", "CSAFPID-4034350", "CSAFPID-4034351", "CSAFPID-4034352", "CSAFPID-4034353", "CSAFPID-4034354", "CSAFPID-4034355", "CSAFPID-4034356", "CSAFPID-4034357", "CSAFPID-4034358", "CSAFPID-4034359", "CSAFPID-4034360", "CSAFPID-4034361", "CSAFPID-4034362", "CSAFPID-4034363", "CSAFPID-4034364", "CSAFPID-4034378", "CSAFPID-4034379", "CSAFPID-4034380", "CSAFPID-4034387", "CSAFPID-4034396", "CSAFPID-4034400", "CSAFPID-4034401", "CSAFPID-4034402", "CSAFPID-4034407", "CSAFPID-4034411", "CSAFPID-4034417", "CSAFPID-4034418", "CSAFPID-4034419", "CSAFPID-4034420", "CSAFPID-4034435", "CSAFPID-4034436", "CSAFPID-4034437", "CSAFPID-4034438", "CSAFPID-4034441", "CSAFPID-4034447", "CSAFPID-4034448", "CSAFPID-4034449", "CSAFPID-4034450", "CSAFPID-4034451", "CSAFPID-4034455", "CSAFPID-4034456", "CSAFPID-4034457", "CSAFPID-4034464", "CSAFPID-4034465", "CSAFPID-4034466", "CSAFPID-4034467", "CSAFPID-4034468", "CSAFPID-4034469", "CSAFPID-4034470", "CSAFPID-4034471", "CSAFPID-4034472", "CSAFPID-4034473", "CSAFPID-4034474", "CSAFPID-4034475", "CSAFPID-4034476", "CSAFPID-4034477", "CSAFPID-4034478", "CSAFPID-4034479", "CSAFPID-4034480", "CSAFPID-4034481", "CSAFPID-4034482", "CSAFPID-5688699", "CSAFPID-5700114", "CSAFPID-5700154", "CSAFPID-5700155", "CSAFPID-5700156", "CSAFPID-5700157", "CSAFPID-5700158", "CSAFPID-5700159", "CSAFPID-5700160", "CSAFPID-5700161", "CSAFPID-5700162", "CSAFPID-5700163", "CSAFPID-5700164", "CSAFPID-5700165", "CSAFPID-5700166", "CSAFPID-5700167", "CSAFPID-5700168", "CSAFPID-5700169", "CSAFPID-5700170", "CSAFPID-5700171", "CSAFPID-5700172", "CSAFPID-5700173", "CSAFPID-5700174", "CSAFPID-5700175", "CSAFPID-5700176", "CSAFPID-5700177", "CSAFPID-5700549", "CSAFPID-5913749", "CSAFPID-5913750", "CSAFPID-5913751", "CSAFPID-5913752", "CSAFPID-5913753", "CSAFPID-5913754", "CSAFPID-5913755", "CSAFPID-5913756", "CSAFPID-5913757", "CSAFPID-5913758", "CSAFPID-5913759", "CSAFPID-5913760", "CSAFPID-5918974", "CSAFPID-5918982" ] } ], "title": "CVE-2026-27586" } ] }