{"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"},{"fixed":"7.4.12","introduced":"7.0.0"},{"fixed":"8.0.12","introduced":"8.0.0"}],"component":"symfony/symfony","cve_ids":["CVE-2026-45077"],"ecosystem":"Packagist","epss":0.00666,"exploited":false,"fixed_versions":["5.4.52","6.4.40","7.4.12","8.0.12"],"ghsa_id":"GHSA-m7v2-7gxm-vc2v","id":"tcs_01M5KF5A43BPCMA47NC3BZ074J","modified_at":"2026-09-10T03:51:06.427699207Z","published_at":"2026-05-27T21:13:29Z","references":["https://osv.dev/vulnerability/GHSA-m7v2-7gxm-vc2v","https://github.com/symfony/symfony/security/advisories/GHSA-m7v2-7gxm-vc2v","https://github.com/symfony/symfony/commit/0891b2f293896c488e26943dc034334364b77fc4","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/monolog-bridge/CVE-2026-45077.yaml","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45077.yaml","https://github.com/symfony/symfony","https://symfony.com/cve-2026-45077"],"severity":{"label":"high"},"sources":[{"source":"osv","source_id":"GHSA-m7v2-7gxm-vc2v#Packagist/symfony/symfony","url":"https://osv.dev/vulnerability/GHSA-m7v2-7gxm-vc2v"}],"summary":"Symfony has Unauthenticated PHP Object Deserialization in MonologBridge server:log Listener"}