{ "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-2026-27468", "tracking": { "current_release_date": "2026-03-23T10:20:27.759187Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-27468", "initial_release_date": "2026-02-24T19:00:55.598055Z", "revision_history": [ { "date": "2026-02-24T19:00:55.598055Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (2).| References created (2).| CWES updated (1)." }, { "date": "2026-02-24T19:01:05.049682Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-02-24T19:29:50.871735Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-02-24T19:29:52.449892Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-02-25T00:22:40.775983Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (19).| Products created (2).| References created (4).| CWES updated (1)." }, { "date": "2026-02-25T15:13:59.202418Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| EPSS created." }, { "date": "2026-02-26T16:26:05.115121Z", "number": "7", "summary": "CVSS created.| Products created (2).| Product Identifiers created (2)." }, { "date": "2026-02-26T16:26:07.734985Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-02-27T21:39:03.883687Z", "number": "9", "summary": "Unknown change." }, { "date": "2026-02-28T20:04:41.168514Z", "number": "10", "summary": "Products connected (194).| Products created (2).| Products removed (21)." }, { "date": "2026-03-01T10:36:53.191431Z", "number": "11", "summary": "Products connected (21).| Products removed (175)." }, { "date": "2026-03-01T16:06:17.939332Z", "number": "12", "summary": "Products connected (175).| Products removed (21)." }, { "date": "2026-03-02T12:07:13.026953Z", "number": "13", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (2).| References created (3)." }, { "date": "2026-03-02T12:07:15.749507Z", "number": "14", "summary": "NCSC Score updated." }, { "date": "2026-03-03T14:26:43.793252Z", "number": "15", "summary": "Products connected (21).| Products removed (175)." }, { "date": "2026-03-20T09:40:59.758051Z", "number": "16", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-20T09:41:04.490126Z", "number": "17", "summary": "NCSC Score updated." } ], "status": "interim", "version": "17" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/>=4.4.0|<4.4.14", "product": { "name": "vers:unknown/>=4.4.0|<4.4.14", "product_id": "CSAFPID-5753154" } }, { "category": "product_version_range", "name": "vers:unknown/>=4.5.0|<4.5.7", "product": { "name": "vers:unknown/>=4.5.0|<4.5.7", "product_id": "CSAFPID-5753155" } } ], "category": "product_name", "name": "mastodon" } ], "category": "vendor", "name": "Bitnami" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/>=4.4.0|<4.4.14", "product": { "name": "vers:unknown/>=4.4.0|<4.4.14", "product_id": "CSAFPID-5731143", "product_identification_helper": { "cpe": "cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=4.5.0|<4.5.7", "product": { "name": "vers:unknown/>=4.5.0|<4.5.7", "product_id": "CSAFPID-5731144", "product_identification_helper": { "cpe": "cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "mastodon" } ], "category": "vendor", "name": "joinmastodon" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/>=4.4.0|<4.4.14", "product": { "name": "vers:unknown/>=4.4.0|<4.4.14", "product_id": "CSAFPID-5695281" } }, { "category": "product_version_range", "name": "vers:unknown/>=4.5.0|<4.5.7", "product": { "name": "vers:unknown/>=4.5.0|<4.5.7", "product_id": "CSAFPID-5695282" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.0", "product": { "name": "vers:unknown/v4.4.0", "product_id": "CSAFPID-3747999" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.1", "product": { "name": "vers:unknown/v4.4.1", "product_id": "CSAFPID-3748003" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.10", "product": { "name": "vers:unknown/v4.4.10", "product_id": "CSAFPID-5362030" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.11", "product": { "name": "vers:unknown/v4.4.11", "product_id": "CSAFPID-5455395" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.12", "product": { "name": "vers:unknown/v4.4.12", "product_id": "CSAFPID-5550555" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.13", "product": { "name": "vers:unknown/v4.4.13", "product_id": "CSAFPID-5700276" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.2", "product": { "name": "vers:unknown/v4.4.2", "product_id": "CSAFPID-3748004" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.3", "product": { "name": "vers:unknown/v4.4.3", "product_id": "CSAFPID-5100265" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.4", "product": { "name": "vers:unknown/v4.4.4", "product_id": "CSAFPID-5100266" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.5", "product": { "name": "vers:unknown/v4.4.5", "product_id": "CSAFPID-5100267" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.6", "product": { "name": "vers:unknown/v4.4.6", "product_id": "CSAFPID-5129478" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.7", "product": { "name": "vers:unknown/v4.4.7", "product_id": "CSAFPID-5129479" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.8", "product": { "name": "vers:unknown/v4.4.8", "product_id": "CSAFPID-5247549" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.9", "product": { "name": "vers:unknown/v4.4.9", "product_id": "CSAFPID-5247550" } }, { "category": "product_version_range", "name": "vers:unknown/v4.5.0", "product": { "name": "vers:unknown/v4.5.0", "product_id": "CSAFPID-5362031" } }, { "category": "product_version_range", "name": "vers:unknown/v4.5.1", "product": { "name": "vers:unknown/v4.5.1", "product_id": "CSAFPID-5362036" } }, { "category": "product_version_range", "name": "vers:unknown/v4.5.2", "product": { "name": "vers:unknown/v4.5.2", "product_id": "CSAFPID-5362037" } }, { "category": "product_version_range", "name": "vers:unknown/v4.5.3", "product": { "name": "vers:unknown/v4.5.3", "product_id": "CSAFPID-5362038" } }, { "category": "product_version_range", "name": "vers:unknown/v4.5.4", "product": { "name": "vers:unknown/v4.5.4", "product_id": "CSAFPID-5455396" } }, { "category": "product_version_range", "name": "vers:unknown/v4.5.5", "product": { "name": "vers:unknown/v4.5.5", "product_id": "CSAFPID-5550556" } }, { "category": "product_version_range", "name": "vers:unknown/v4.5.6", "product": { "name": "vers:unknown/v4.5.6", "product_id": "CSAFPID-5700277" } } ], "category": "product_name", "name": "mastodon" } ], "category": "vendor", "name": "mastodon" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/v4.4.0", "product": { "name": "vers:unknown/v4.4.0", "product_id": "CSAFPID-3748005" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.1", "product": { "name": "vers:unknown/v4.4.1", "product_id": "CSAFPID-3748009" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.10", "product": { "name": "vers:unknown/v4.4.10", "product_id": "CSAFPID-5521245" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.11", "product": { "name": "vers:unknown/v4.4.11", "product_id": "CSAFPID-5521246" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.12", "product": { "name": "vers:unknown/v4.4.12", "product_id": "CSAFPID-5668201" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.13", "product": { "name": "vers:unknown/v4.4.13", "product_id": "CSAFPID-5751232" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.2", "product": { "name": "vers:unknown/v4.4.2", "product_id": "CSAFPID-3748010" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.3", "product": { "name": "vers:unknown/v4.4.3", "product_id": "CSAFPID-5266547" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.4", "product": { "name": "vers:unknown/v4.4.4", "product_id": "CSAFPID-5266548" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.5", "product": { "name": "vers:unknown/v4.4.5", "product_id": "CSAFPID-5266549" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.6", "product": { "name": "vers:unknown/v4.4.6", "product_id": "CSAFPID-5266550" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.7", "product": { "name": "vers:unknown/v4.4.7", "product_id": "CSAFPID-5266551" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.8", "product": { "name": "vers:unknown/v4.4.8", "product_id": "CSAFPID-5521247" } }, { "category": "product_version_range", "name": "vers:unknown/v4.4.9", "product": { "name": "vers:unknown/v4.4.9", "product_id": "CSAFPID-5521248" } }, { "category": "product_version_range", "name": "vers:unknown/v4.5.0", "product": { "name": "vers:unknown/v4.5.0", "product_id": "CSAFPID-5536392" } }, { "category": "product_version_range", "name": "vers:unknown/v4.5.1", "product": { "name": "vers:unknown/v4.5.1", "product_id": "CSAFPID-5536393" } }, { "category": "product_version_range", "name": "vers:unknown/v4.5.2", "product": { "name": "vers:unknown/v4.5.2", "product_id": "CSAFPID-5536394" } }, { "category": "product_version_range", "name": "vers:unknown/v4.5.3", "product": { "name": "vers:unknown/v4.5.3", "product_id": "CSAFPID-5536395" } }, { "category": "product_version_range", "name": "vers:unknown/v4.5.4", "product": { "name": "vers:unknown/v4.5.4", "product_id": "CSAFPID-5544290" } }, { "category": "product_version_range", "name": "vers:unknown/v4.5.5", "product": { "name": "vers:unknown/v4.5.5", "product_id": "CSAFPID-5668202" } }, { "category": "product_version_range", "name": "vers:unknown/v4.5.6", "product": { "name": "vers:unknown/v4.5.6", "product_id": "CSAFPID-5751233" } } ], "category": "product_name", "name": "mastodon" } ], "category": "vendor", "name": "tootsuite" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-27468", "cwe": { "id": "CWE-862", "name": "Missing Authorization" }, "notes": [ { "category": "description", "text": "Mastodon is a free, open-source social network server based on ActivityPub. FASP registration requires manual approval by an administrator. In versions 4.4.0 through 4.4.13 and 4.5.0 through 4.5.6, actions performed by a FASP to subscribe to account/content lifecycle events or to backfill content did not check properly whether the FASP was actually approved. This only affects Mastodon servers that have opted in to testing the experimental FASP feature by setting the environment variable `EXPERIMENTAL_FEATURES` to a value including `fasp`. An attacker can make subscriptions and request content backfill without approval by an administrator. Done once, this leads to minor information leak of URIs that are publicly available anyway. But done several times this is a serious vector for DOS, putting pressure on the sidekiq worker responsible for the `fasp` queue. The fix is included in the 4.4.14 and 4.5.7 releases. Admins that are actively testing the experimental \"fasp\" feature should update their systems. Servers not using the experimental feature flag `fasp` are not affected.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-27468" }, { "category": "description", "text": "Mastodon is a free, open-source social network server based on ActivityPub. FASP registration requires manual approval by an administrator. In versions 4.4.0 through 4.4.13 and 4.5.0 through 4.5.6, actions performed by a FASP to subscribe to account/content lifecycle events or to backfill content did not check properly whether the FASP was actually approved. This only affects Mastodon servers that have opted in to testing the experimental FASP feature by setting the environment variable `EXPERIMENTAL_FEATURES` to a value including `fasp`. An attacker can make subscriptions and request content backfill without approval by an administrator. Done once, this leads to minor information leak of URIs that are publicly available anyway. But done several times this is a serious vector for DOS, putting pressure on the sidekiq worker responsible for the `fasp` queue. The fix is included in the 4.4.14 and 4.5.7 releases. Admins that are actively testing the experimental \"fasp\" feature should update their systems. Servers not using the experimental feature flag `fasp` are not affected.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-27468" }, { "category": "description", "text": "Mastodon is a free, open-source social network server based on ActivityPub. FASP registration requires manual approval by an administrator. In versions 4.4.0 through 4.4.13 and 4.5.0 through 4.5.6, actions performed by a FASP to subscribe to account/content lifecycle events or to backfill content did not check properly whether the FASP was actually approved. This only affects Mastodon servers that have opted in to testing the experimental FASP feature by setting the environment variable `EXPERIMENTAL_FEATURES` to a value including `fasp`. An attacker can make subscriptions and request content backfill without approval by an administrator. Done once, this leads to minor information leak of URIs that are publicly available anyway. But done several times this is a serious vector for DOS, putting pressure on the sidekiq worker responsible for the `fasp` queue. The fix is included in the 4.4.14 and 4.5.7 releases. Admins that are actively testing the experimental \"fasp\" feature should update their systems. Servers not using the experimental feature flag `fasp` are not affected.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-27468.json?alt=media" }, { "category": "description", "text": "Mastodon is a free, open-source social network server based on ActivityPub. FASP registration requires manual approval by an administrator. In versions 4.4.0 through 4.4.13 and 4.5.0 through 4.5.6, actions performed by a FASP to subscribe to account/content lifecycle events or to backfill content did not check properly whether the FASP was actually approved. This only affects Mastodon servers that have opted in to testing the experimental FASP feature by setting the environment variable `EXPERIMENTAL_FEATURES` to a value including `fasp`. An attacker can make subscriptions and request content backfill without approval by an administrator. Done once, this leads to minor information leak of URIs that are publicly available anyway. But done several times this is a serious vector for DOS, putting pressure on the sidekiq worker responsible for the `fasp` queue. The fix is included in the 4.4.14 and 4.5.7 releases. Admins that are actively testing the experimental \"fasp\" feature should update their systems. Servers not using the experimental feature flag `fasp` are not affected.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Bitnami%2FBIT-mastodon-2026-27468.json?alt=media" }, { "category": "other", "text": "0.00054", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U", "title": "CVSSV4" }, { "category": "other", "text": "4.8", "title": "CVSSV4 base score" }, { "category": "other", "text": "3.9", "title": "NCSC Score" }, { "category": "other", "text": "Is related to CWE-862 (Missing Authorization), The value of the most recent CVSS (V3) score, Is related to (a version of) an uncommon product, Is related to an uncommon product vendor", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-5695281", "CSAFPID-5695282", "CSAFPID-5731143", "CSAFPID-5731144", "CSAFPID-3748005", "CSAFPID-3748009", "CSAFPID-3748010", "CSAFPID-5266547", "CSAFPID-5266548", "CSAFPID-5266549", "CSAFPID-5266550", "CSAFPID-5266551", "CSAFPID-5521245", "CSAFPID-5521246", "CSAFPID-5521247", "CSAFPID-5521248", "CSAFPID-5536392", "CSAFPID-5536393", "CSAFPID-5536394", "CSAFPID-5536395", "CSAFPID-5544290", "CSAFPID-5668201", "CSAFPID-5668202", "CSAFPID-5751232", "CSAFPID-5751233", "CSAFPID-5753154", "CSAFPID-5753155", "CSAFPID-3747999", "CSAFPID-3748003", "CSAFPID-3748004", "CSAFPID-5100265", "CSAFPID-5100266", "CSAFPID-5100267", "CSAFPID-5129478", "CSAFPID-5129479", "CSAFPID-5247549", "CSAFPID-5247550", "CSAFPID-5362030", "CSAFPID-5362031", "CSAFPID-5362036", "CSAFPID-5362037", "CSAFPID-5362038", "CSAFPID-5455395", "CSAFPID-5455396", "CSAFPID-5550555", "CSAFPID-5550556", "CSAFPID-5700276", "CSAFPID-5700277" ] }, "references": [ { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-27468" }, { "category": "external", "summary": "Source raw - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/27xxx/CVE-2026-27468.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27468" }, { "category": "external", "summary": "Source raw - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-27468" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-27468.json?alt=media" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-27468" }, { "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/Bitnami%2FBIT-mastodon-2026-27468.json?alt=media" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; osv", "url": "https://github.com/mastodon/mastodon/security/advisories/GHSA-qgmm-vr4c-ggjg" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; osv", "url": "https://github.com/mastodon/mastodon/commit/6ba6285a73c3a8b281123814d45f534e3bcebb96" }, { "category": "external", "summary": "Reference - osv", "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27468.json" }, { "category": "external", "summary": "Reference - osv", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27468" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H", "baseScore": 8.2, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-3747999", "CSAFPID-3748003", "CSAFPID-3748004", "CSAFPID-3748005", "CSAFPID-3748009", "CSAFPID-3748010", "CSAFPID-5100265", "CSAFPID-5100266", "CSAFPID-5100267", "CSAFPID-5129478", "CSAFPID-5129479", "CSAFPID-5247549", "CSAFPID-5247550", "CSAFPID-5266547", "CSAFPID-5266548", "CSAFPID-5266549", "CSAFPID-5266550", "CSAFPID-5266551", "CSAFPID-5362030", "CSAFPID-5362031", "CSAFPID-5362036", "CSAFPID-5362037", "CSAFPID-5362038", "CSAFPID-5455395", "CSAFPID-5455396", "CSAFPID-5521245", "CSAFPID-5521246", "CSAFPID-5521247", "CSAFPID-5521248", "CSAFPID-5536392", "CSAFPID-5536393", "CSAFPID-5536394", "CSAFPID-5536395", "CSAFPID-5544290", "CSAFPID-5550555", "CSAFPID-5550556", "CSAFPID-5668201", "CSAFPID-5668202", "CSAFPID-5695281", "CSAFPID-5695282", "CSAFPID-5700276", "CSAFPID-5700277", "CSAFPID-5731143", "CSAFPID-5731144", "CSAFPID-5751232", "CSAFPID-5751233", "CSAFPID-5753154", "CSAFPID-5753155" ] } ], "title": "CVE-2026-27468" } ] }