{"id":"CVE-2026-45063","summary":"Symfony: Identity Spoofing via Unanchored DN Regex in X509Authenticator","details":"Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, X509Authenticator extracts the user identifier from $_SERVER['SSL_CLIENT_S_DN'] with an unanchored regex that matches emailAddress= anywhere in the distinguished name, allowing an attacker with a trusted certificate containing emailAddress=victim inside another RDN value such as CN to authenticate as the victim. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.","aliases":["GHSA-ph86-p8f6-f9r2"],"modified":"2026-07-17T03:46:34.666570608Z","published":"2026-07-14T18:28:22.074Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45063.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-290"]},"references":[{"type":"WEB","url":"https://github.com/symfony/symfony/releases/tag/v5.4.52"},{"type":"WEB","url":"https://github.com/symfony/symfony/releases/tag/v6.4.40"},{"type":"WEB","url":"https://github.com/symfony/symfony/releases/tag/v7.4.12"},{"type":"WEB","url":"https://github.com/symfony/symfony/releases/tag/v8.0.12"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45063.json"},{"type":"ADVISORY","url":"https://github.com/symfony/symfony/security/advisories/GHSA-ph86-p8f6-f9r2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45063"},{"type":"FIX","url":"https://github.com/symfony/symfony/commit/59ef484029601a7af06f5e06c6ed921fdcea5a0d"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/symfony/security-http","events":[{"introduced":"0"},{"fixed":"355f32f4318c962842f016eabd0966fde739f6fc"},{"introduced":"6530589fc40cdceda230fb6a69173ce52fa8b5ca"},{"fixed":"816860d96c4fb7ffd7708ae0531ea6e5a1190773"},{"introduced":"f84d7d3c93e6a884908402775199b1f7d55c7be1"},{"fixed":"1fc7ca636cbd2cad29b42cc13c9fd0c681c6efee"},{"introduced":"bea6dc79db4d95c34b77ec27273d812aa64d65be"},{"fixed":"d776945b2dc41c0e609c56c1ef69863ab56856ed"}],"database_specific":{"cpe":"cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"5.4.52"},{"introduced":"6.0.0"},{"fixed":"6.4.40"},{"introduced":"7.0.0"},{"fixed":"7.4.12"},{"introduced":"8.0.0"},{"fixed":"8.0.12"}],"source":"CPE_RANGE"}},{"type":"GIT","repo":"https://github.com/symfony/symfony","events":[{"introduced":"0"},{"fixed":"eabc5f9ed7831fe6de8d609c5ebc29aed1f8ef8f"},{"introduced":"aa4e97099b5a67bdc9f2387fe8d099f5c712f81c"},{"fixed":"95a951788e30c45356278f4e4472cbbf552d0eb9"},{"introduced":"d78c5f403d7ee794993660b1d5155536edd36fc1"},{"fixed":"275f5cbccbcc50205206f05e599c4f57009aadb8"},{"introduced":"2e913a829cfbbf9cb38b321bdff1806b44b192eb"},{"fixed":"06d3b2c9a8aeb5d8493738cc51e24f6a1215827c"},{"fixed":"59ef484029601a7af06f5e06c6ed921fdcea5a0d"}],"database_specific":{"cpe":"cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"5.4.52"},{"introduced":"6.0.0"},{"fixed":"6.4.40"},{"introduced":"7.0.0"},{"fixed":"7.4.12"},{"introduced":"8.0.0"},{"fixed":"8.0.12"}],"source":["CPE_RANGE","REFERENCES"]}}],"versions":["v6.4.39","v8.0.11","v7.4.11","v7.4.0-BETA1","v8.0.9","v7.4.9","v5.4.47","v6.4.34","v8.0.8","v7.4.8","v8.0.6","v7.4.6","v6.4.31","v8.0.4","v7.4.4","v8.0.3","v7.4.3","v8.0.1","v7.4.1","v6.4.30","v7.4.0","v8.0.0","v7.4.0-RC2","v7.4.0-RC1","v6.4.26","v6.4.25","v6.4.24","v6.4.23","v7.3.0","v6.4.22","v7.3.0-RC1","v7.3.0-BETA2","v7.3.0-BETA1","v6.4.21","v6.4.19","v6.4.18","v7.2.1","v6.4.15","v7.2.0-RC1","v7.2.0","v7.2.0-BETA2","v6.4.14","v5.4.46","v7.2.0-BETA1","v6.4.13","v5.4.45","v6.4.12","v5.4.44","v6.4.11","v5.4.43","v6.4.9","v5.4.41","v6.4.8","v5.4.40","v7.1.0-RC1","v7.1.0","v7.1.0-BETA1","v6.4.7","v5.4.39","v6.4.4","v5.4.38","v5.4.36","v5.4.35","v6.4.3","v7.0.1","v6.4.0-RC2","v6.4.0","v5.4.31","v7.0.0-RC2","v7.0.0","v6.4.0-RC1","v6.4.0-BETA3","v6.4.0-BETA1","v5.4.30","v5.4.28","v5.4.26","v5.4.23","v6.3.0-RC1","v6.3.0-BETA1","v5.4.22","v5.4.21","v5.4.20","v5.4.19","v5.4.17","v6.2.0","v6.2.0-RC1","v5.4.15","v6.2.0-BETA3","v6.2.0-BETA1","v5.4.13","v5.4.11","v5.4.12","v5.4.10","v6.1.0-RC1","v6.1.0","v5.4.9","v6.1.0-BETA2","v5.4.8","v6.1.0-BETA1","v5.4.5","v5.4.3","v5.4.2","v5.4.0","v6.0.0","v5.4.0-RC1","v5.4.0-BETA2","v5.4.0-BETA1","v5.3.0-RC1","v5.3.0-BETA4","v5.3.0-BETA3","v5.3.0-BETA2","v5.3.0-BETA1","v5.2.0","v5.2.0-RC2","v5.2.0-RC1","v5.2.0-BETA3","v5.2.0-BETA2","v5.2.0-BETA1","v5.1.0-RC1","v5.1.0-BETA1","v5.0.0-RC1","v5.0.0-BETA2","v5.0.0-BETA1","v4.3.0-BETA2","v4.3.0-BETA1","v4.2.0-RC1","v4.2.0-BETA2","v4.2.0","v4.2.0-BETA1","v4.1.0-BETA1","v4.0.0-RC1","v4.0.0-BETA4","v4.0.0-BETA3","v4.0.0-BETA2","v4.0.0-BETA1","v3.3.0-RC1","v3.3.0-BETA1","v3.2.0-RC1","v3.2.0-BETA1","v3.1.1","v3.1.0-RC1","v3.1.0-BETA1","v3.1.0","v3.0.0","v3.0.0-BETA1","v2.6.0-BETA1","v2.5.0-BETA1","v2.5.2","v2.5.1","v2.5.0-RC1","v2.5.0","v2.5.0-BETA2","v2.4.0-RC1","v2.4.0-BETA2","v2.4.0-BETA1","v5.4.51","v6.4.38","v8.0.10","v7.4.10","v6.4.37","v6.4.36","v8.0.7","v7.4.7","v6.4.35","v8.0.5","v7.4.5","v6.4.33","v6.4.32","v5.4.50","v8.0.2","v7.4.2","v7.4.0-RC3","v6.4.29","v5.4.49","v6.4.28","v7.4.0-BETA2","v6.4.27","v6.4.20","v6.4.17","v6.4.16","v5.4.48","v6.4.10","v5.4.42","v6.4.6","v6.4.5","v5.4.37","v6.4.2","v5.4.34","v6.4.1","v5.4.33","v5.4.32","v7.0.0-RC1","v7.0.0-BETA3","v7.0.0-BETA2","v6.4.0-BETA2","v7.0.0-BETA1","v5.4.29","v5.4.27","v5.4.25","v5.4.24","v6.3.0-BETA3","v6.3.0-BETA2","v5.4.18","v5.4.16","v6.2.0-BETA2","v5.4.14","v5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