{"action":"Upgrade symfony/symfony to 5.4.52 or later.","affected":[{"fixed":"5.4.52","introduced":"0"},{"fixed":"6.4.40","introduced":"6.0.0-BETA1"},{"fixed":"7.4.12","introduced":"7.0.0-BETA1"},{"fixed":"8.0.12","introduced":"8.0.0-BETA1"}],"component":"symfony/symfony","cve_ids":["CVE-2026-45063"],"ecosystem":"Packagist","epss":0.00367,"exploited":false,"fixed_versions":["5.4.52","6.4.40","7.4.12","8.0.12"],"ghsa_id":"GHSA-ph86-p8f6-f9r2","id":"tcs_01M5KF6DA91RX4AY3X9KF3G2YN","modified_at":"2026-09-10T03:51:06.774818868Z","published_at":"2026-05-27T16:50:42Z","references":["https://osv.dev/vulnerability/GHSA-ph86-p8f6-f9r2","https://github.com/symfony/symfony/security/advisories/GHSA-ph86-p8f6-f9r2","https://github.com/symfony/symfony/commit/ccb3f724c7ff55670a6fe3521c7bf1514cceb478","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2026-45063.yaml","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45063.yaml","https://github.com/symfony/symfony","https://symfony.com/cve-2026-45063"],"severity":{"label":"high"},"sources":[{"source":"osv","source_id":"GHSA-ph86-p8f6-f9r2#Packagist/symfony/symfony","url":"https://osv.dev/vulnerability/GHSA-ph86-p8f6-f9r2"}],"summary":"Symfony Vulnerable to Identity Spoofing via Unanchored DN Regex in X509Authenticator"}