{ "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-2026-3099", "tracking": { "current_release_date": "2026-03-25T12:20:08.779101Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-3099", "initial_release_date": "2026-02-24T12:27:36.768293Z", "revision_history": [ { "date": "2026-02-24T12:27:36.768293Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (10).| Product Identifiers created (5).| Product Remediations created (10).| References created (2).| CWES updated (1).| Vendor_assessment created." }, { "date": "2026-02-24T12:27:43.314250Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-02-25T12:43:15.687871Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Products connected (3)." }, { "date": "2026-02-25T12:43:23.415477Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-12T14:27:16.313730Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-12T14:27:19.331765Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-03-12T14:39:07.466122Z", "number": "7", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-12T14:39:10.977462Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-03-12T15:26:47.710084Z", "number": "9", "summary": "References created (1)." }, { "date": "2026-03-12T15:38:56.782551Z", "number": "10", "summary": "References created (1)." }, { "date": "2026-03-12T18:38:48.666709Z", "number": "11", "summary": "Unknown change." }, { "date": "2026-03-13T06:43:07.647389Z", "number": "12", "summary": "Description created for source." }, { "date": "2026-03-13T14:14:17.377938Z", "number": "13", "summary": "Source created.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-20T09:33:11.270210Z", "number": "14", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-20T09:33:14.123177Z", "number": "15", "summary": "NCSC Score updated." }, { "date": "2026-03-23T17:24:40.745690Z", "number": "16", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (6).| Product Identifiers created (6).| Exploits created (1).| References created (3).| CWES updated (1)." }, { "date": "2026-03-23T17:24:43.301329Z", "number": "17", "summary": "NCSC Score updated." }, { "date": "2026-03-23T22:27:57.825809Z", "number": "18", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1).| Unknown change." }, { "date": "2026-03-24T21:41:52.208489Z", "number": "19", "summary": "EPSS updated." }, { "date": "2026-03-24T21:41:58.570798Z", "number": "20", "summary": "NCSC Score updated." }, { "date": "2026-03-25T12:20:01.698824Z", "number": "21", "summary": "Source connected.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (2).| CWES updated (1)." }, { "date": "2026-03-25T12:20:04.972694Z", "number": "22", "summary": "NCSC Score updated." } ], "status": "interim", "version": "22" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/10", "product": { "name": "vers:rpm/10", "product_id": "CSAFPID-2858634", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:10" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 10" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/6", "product": { "name": "vers:rpm/6", "product_id": "CSAFPID-1439321", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:6" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 6" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/7", "product": { "name": "vers:rpm/7", "product_id": "CSAFPID-1439315", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:7" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 7" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/8", "product": { "name": "vers:rpm/8", "product_id": "CSAFPID-1439317", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:8" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 8" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/9", "product": { "name": "vers:rpm/9", "product_id": "CSAFPID-1439319", "product_identification_helper": { "cpe": "cpe:/a:redhat:enterprise_linux:9" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 9" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/10.0", "product": { "name": "vers:unknown/10.0", "product_id": "CSAFPID-2941214", "product_identification_helper": { "cpe": "cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/6.0", "product": { "name": "vers:unknown/6.0", "product_id": "CSAFPID-1992585", "product_identification_helper": { "cpe": "cpe:2.3:o:redhat:enterprise_linux:6.4:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/7.0", "product": { "name": "vers:unknown/7.0", "product_id": "CSAFPID-1992579", "product_identification_helper": { "cpe": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/8.0", "product": { "name": "vers:unknown/8.0", "product_id": "CSAFPID-1994226", "product_identification_helper": { "cpe": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/9.0", "product": { "name": "vers:unknown/9.0", "product_id": "CSAFPID-2001071", "product_identification_helper": { "cpe": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "enterprise_linux" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2618547" } } ], "category": "product_name", "name": "libsoup" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 6" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2618548" } } ], "category": "product_name", "name": "libsoup" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 7" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2618549" } } ], "category": "product_name", "name": "libsoup" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 8" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2618550" } } ], "category": "product_name", "name": "libsoup" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 9" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2965651" } } ], "category": "product_name", "name": "libsoup3" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 10" } ], "category": "vendor", "name": "Red Hat" }, { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/*", "product": { "name": "vers:microsoft/*", "product_id": "CSAFPID-5890854", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:azl3_libsoup_3.4.4-12:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "azl3 libsoup 3.4.4-12 on Azure Linux 3.0" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/*", "product": { "name": "vers:microsoft/*", "product_id": "CSAFPID-5890853", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:cbl2_libsoup_3.0.4-12:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "cbl2 libsoup 3.0.4-12 on CBL Mariner 2.0" } ], "category": "product_family", "name": "Open Source Software" } ], "category": "vendor", "name": "Microsoft" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-5873934", "product_identification_helper": { "cpe": "cpe:2.3:a:gnome:libsoup:-:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "libsoup" } ], "category": "vendor", "name": "Gnome" }, { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/unknown", "product": { "name": "vers:deb/unknown", "product_id": "CSAFPID-2617521" } } ], "category": "product_name", "name": "libsoup2.4" }, { "branches": [ { "category": "product_version_range", "name": "vers:deb/unknown", "product": { "name": "vers:deb/unknown", "product_id": "CSAFPID-2563067" } } ], "category": "product_name", "name": "libsoup3" } ], "category": "product_family", "name": "bookworm" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/unknown", "product": { "name": "vers:deb/unknown", "product_id": "CSAFPID-2617522" } } ], "category": "product_name", "name": "libsoup2.4" } ], "category": "product_family", "name": "bullseye" } ], "category": "vendor", "name": "Debian" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-3099", "cwe": { "id": "CWE-323", "name": "Reusing a Nonce, Key Pair in Encryption" }, "notes": [ { "category": "description", "text": "No description is available for this CVE.", "title": "redhat - https://access.redhat.com/security/cve/CVE-2026-3099" }, { "category": "description", "text": "A flaw was found in Libsoup. The server-side digest authentication implementation in the SoupAuthDomainDigest class does not properly track issued nonces or enforce the required incrementing nonce-count (nc) attribute. This vulnerability allows a remote attacker to capture a single valid authentication header and replay it repeatedly. Consequently, the attacker can bypass authentication and gain unauthorized access to protected resources, impersonating the legitimate user.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-3099" }, { "category": "description", "text": "A flaw was found in Libsoup. The server-side digest authentication implementation in the SoupAuthDomainDigest class does not properly track issued nonces or enforce the required incrementing nonce-count (nc) attribute. This vulnerability allows a remote attacker to capture a single valid authentication header and replay it repeatedly. Consequently, the attacker can bypass authentication and gain unauthorized access to protected resources, impersonating the legitimate user.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-3099" }, { "category": "description", "text": "A flaw was found in Libsoup. The server-side digest authentication implementation in the SoupAuthDomainDigest class does not properly track issued nonces or enforce the required incrementing nonce-count (nc) attribute. This vulnerability allows a remote attacker to capture a single valid authentication header and replay it repeatedly. Consequently, the attacker can bypass authentication and gain unauthorized access to protected resources, impersonating the legitimate user.", "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-3099" }, { "category": "description", "text": "A flaw was found in Libsoup. The server-side digest authentication implementation in the SoupAuthDomainDigest class does not properly track issued nonces or enforce the required incrementing nonce-count (nc) attribute. This vulnerability allows a remote attacker to capture a single valid authentication header and replay it repeatedly. Consequently, the attacker can bypass authentication and gain unauthorized access to protected resources, impersonating the legitimate user.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-3099" }, { "category": "description", "text": "A flaw was found in Libsoup. The server-side digest authentication implementation in the SoupAuthDomainDigest class does not properly track issued nonces or enforce the required incrementing nonce-count (nc) attribute. This vulnerability allows a remote attacker to capture a single valid authentication header and replay it repeatedly. Consequently, the attacker can bypass authentication and gain unauthorized access to protected resources, impersonating the legitimate user.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/3xxx/CVE-2026-3099.json" }, { "category": "description", "text": "Libsoup: libsoup: authentication bypass via digest authentication replay attack", "title": "microsoft - https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Mar" }, { "category": "other", "text": "0.00366", "title": "EPSS" }, { "category": "other", "text": "4.3", "title": "NCSC Score" }, { "category": "other", "text": "Is related to (a version of) an uncommon product, There is exploit data available from source Nvd", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 2\n", "title": "Vendor assessment" } ], "product_status": { "known_affected": [ "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-2618547", "CSAFPID-2618548", "CSAFPID-2618549", "CSAFPID-2618550", "CSAFPID-2858634", "CSAFPID-2965651", "CSAFPID-2563067", "CSAFPID-2617521", "CSAFPID-2617522", "CSAFPID-1992579", "CSAFPID-1992585", "CSAFPID-1994226", "CSAFPID-2001071", "CSAFPID-2941214", "CSAFPID-5873934", "CSAFPID-5890853", "CSAFPID-5890854" ] }, "references": [ { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/security/cve/CVE-2026-3099" }, { "category": "external", "summary": "Source raw - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-3099.json" }, { "category": "external", "summary": "Source - debian", "url": "https://security-tracker.debian.org/tracker/CVE-2026-3099" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3099" }, { "category": "external", "summary": "Source raw - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-3099" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-3099" }, { "category": "external", "summary": "Source raw - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/3xxx/CVE-2026-3099.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-3099" }, { "category": "external", "summary": "Source raw - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-3099" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/3xxx/CVE-2026-3099.json" }, { "category": "external", "summary": "Source - microsoft", "url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Mar" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-3099" }, { "category": "external", "summary": "Reference - redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3099" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://access.redhat.com/security/cve/CVE-2026-3099" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2442232" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://gitlab.gnome.org/GNOME/libsoup/-/issues/495" } ], "remediations": [ { "category": "mitigation", "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.", "product_ids": [ "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-2618547", "CSAFPID-2618548", "CSAFPID-2618549", "CSAFPID-2618550", "CSAFPID-2858634", "CSAFPID-2965651" ] } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L", "baseScore": 5.8, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-1992579", "CSAFPID-1992585", "CSAFPID-1994226", "CSAFPID-2001071", "CSAFPID-2563067", "CSAFPID-2617521", "CSAFPID-2617522", "CSAFPID-2618547", "CSAFPID-2618548", "CSAFPID-2618549", "CSAFPID-2618550", "CSAFPID-2858634", "CSAFPID-2941214", "CSAFPID-2965651", "CSAFPID-5873934", "CSAFPID-5890853", "CSAFPID-5890854" ] } ], "title": "CVE-2026-3099" } ] }