{"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-2026-45067"],"ecosystem":"Packagist","epss":0.00598,"exploited":false,"fixed_versions":["5.4.52","6.4.40","7.4.12","8.0.12"],"ghsa_id":"GHSA-qpmx-3rfj-7rhv","id":"tcs_01M5KF7FNN352E06G4WZD00N37","modified_at":"2026-09-10T03:50:47.380398743Z","published_at":"2026-05-27T20:42:07Z","references":["https://osv.dev/vulnerability/GHSA-qpmx-3rfj-7rhv","https://github.com/symfony/symfony/security/advisories/GHSA-qpmx-3rfj-7rhv","https://github.com/symfony/symfony/commit/dc2dbd29211eb4ddc451373fa1374fb926e94604","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/mime/CVE-2026-45067.yaml","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45067.yaml","https://github.com/symfony/symfony","https://symfony.com/cve-2026-45067"],"severity":{"label":"high"},"sources":[{"source":"osv","source_id":"GHSA-qpmx-3rfj-7rhv#Packagist/symfony/symfony","url":"https://osv.dev/vulnerability/GHSA-qpmx-3rfj-7rhv"}],"summary":"Symfony has Email Header / SMTP Command Injection via CRLF in Symfony\\Component\\Mime\\Address"}