{"id":"GHSA-qpmx-3rfj-7rhv","summary":"Symfony has Email Header / SMTP Command Injection via CRLF in Symfony\\Component\\Mime\\Address","details":"### Description\n\n`Symfony\\Component\\Mime\\Address` is the value-object every Symfony Mailer address (to/cc/bcc/from/reply-to) flows through; its constructor is documented as validating the address and throwing on invalid input, so developers treat it as a security boundary.\n\nThe constructor accepts email addresses whose local-part (the part before `@`) is an RFC-5322 *quoted string* containing raw `\\r\\n` bytes, e.g. `\"x\\r\\nBcc: attacker@evil\"@example.com`. The stored address is later emitted verbatim into (1) the rendered message headers and (2) `SmtpTransport`'s `MAIL FROM:\u003c...\u003e` / `RCPT TO:\u003c...\u003e` protocol lines, turning the embedded CRLF into a new mail header and/or a new SMTP command.\n\n### Resolution\n\nThe `Address` constructor now rejects addresses containing line breaks.\n\nThe patch for this issue is available [here](https://github.com/symfony/symfony/commit/dc2dbd29211eb4ddc451373fa1374fb926e94604) for branch 5.4.\n\n### Credits\n\nWe would like to thank Claude Mythos Preview (via Project Glasswing) for reporting the issue and providing the fix.","aliases":["CVE-2026-45067"],"modified":"2026-09-10T03:50:47.380398743Z","published":"2026-05-27T20:42:07Z","database_specific":{"cwe_ids":["CWE-93"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-05-27T20:42:07Z","nvd_published_at":null},"references":[{"type":"WEB","url":"https://github.com/symfony/symfony/security/advisories/GHSA-qpmx-3rfj-7rhv"},{"type":"WEB","url":"https://github.com/symfony/symfony/commit/dc2dbd29211eb4ddc451373fa1374fb926e94604"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/mime/CVE-2026-45067.yaml"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45067.yaml"},{"type":"PACKAGE","url":"https://github.com/symfony/symfony"},{"type":"WEB","url":"https://symfony.com/cve-2026-45067"}],"affected":[{"package":{"name":"symfony/mime","ecosystem":"Packagist","purl":"pkg:composer/symfony/mime"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.52"}]}],"versions":["v4.3.0","v4.3.0-BETA1","v4.3.0-BETA2","v4.3.0-RC1","v4.3.1","v4.3.10","v4.3.11","v4.3.2","v4.3.3","v4.3.4","v4.3.5","v4.3.6","v4.3.7","v4.3.8","v4.3.9","v4.4.0","v4.4.0-BETA1","v4.4.0-BETA2","v4.4.0-RC1","v4.4.1","v4.4.10","v4.4.11","v4.4.12","v4.4.13","v4.4.14","v4.4.15","v4.4.16","v4.4.17","v4.4.18","v4.4.19","v4.4.2","v4.4.20","v4.4.21","v4.4.22","v4.4.24","v4.4.25","v4.4.26","v4.4.27","v4.4.3","v4.4.31","v4.4.34","v4.4.36","v4.4.37","v4.4.4","v4.4.41","v4.4.42","v4.4.43","v4.4.44","v4.4.45","v4.4.46","v4.4.47","v4.4.5","v4.4.6","v4.4.7","v4.4.8","v4.4.9","v5.0.0","v5.0.0-BETA1","v5.0.0-BETA2","v5.0.0-RC1","v5.0.1","v5.0.10","v5.0.11","v5.0.2","v5.0.3","v5.0.4","v5.0.5","v5.0.6","v5.0.7","v5.0.8","v5.0.9","v5.1.0","v5.1.0-BETA1","v5.1.0-RC1","v5.1.0-RC2","v5.1.1","v5.1.10","v5.1.11","v5.1.2","v5.1.3","v5.1.4","v5.1.5","v5.1.6","v5.1.7","v5.1.8","v5.1.9","v5.2.0","v5.2.0-BETA1","v5.2.0-BETA2","v5.2.0-BETA3","v5.2.0-RC1","v5.2.0-RC2","v5.2.1","v5.2.10","v5.2.11","v5.2.12","v5.2.2","v5.2.3","v5.2.4","v5.2.5","v5.2.6","v5.2.7","v5.2.9","v5.3.0","v5.3.0-BETA1","v5.3.0-BETA2","v5.3.0-BETA3","v5.3.0-RC1","v5.3.11","v5.3.13","v5.3.14","v5.3.2","v5.3.4","v5.3.7","v5.3.8","v5.4.0","v5.4.0-BETA1","v5.4.0-BETA3","v5.4.0-RC1","v5.4.10","v5.4.11","v5.4.12","v5.4.13","v5.4.14","v5.4.16","v5.4.17","v5.4.19","v5.4.2","v5.4.21","v5.4.23","v5.4.26","v5.4.3","v5.4.35","v5.4.38","v5.4.39","v5.4.40","v5.4.41","v5.4.43","v5.4.45","v5.4.7","v5.4.8","v5.4.9"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-qpmx-3rfj-7rhv/GHSA-qpmx-3rfj-7rhv.json"}},{"package":{"name":"symfony/symfony","ecosystem":"Packagist","purl":"pkg:composer/symfony/symfony"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.52"}]}],"versions":["2.0.4","2.0.5","2.0.6","2.0.7","v2.0.10","v2.0.11","v2.0.12","v2.0.13","v2.0.14","v2.0.15","v2.0.16","v2.0.17","v2.0.18","v2.0.19","v2.0.20","v2.0.21","v2.0.22","v2.0.23","v2.0.24","v2.0.25","v2.0.9","v2.1.0","v2.1.0-BETA1","v2.1.0-BETA2","v2.1.0-BETA3","v2.1.0-BETA4","v2.1.0-RC1","v2.1.0-RC2","v2.1.1","v2.1.10","v2.1.11","v2.1.12","v2.1.13","v2.1.2","v2.1.3","v2.1.4","v2.1.5","v2.1.6","v2.1.7","v2.1.8","v2.1.9","v2.2.0","v2.2.0-BETA1","v2.2.0-BETA2","v2.2.0-RC1","v2.2.0-RC2","v2.2.0-RC3","v2.2.1","v2.2.10","v2.2.11","v2.2.2","v2.2.3","v2.2.4","v2.2.5","v2.2.6","v2.2.7","v2.2.8","v2.2.9","v2.3.0","v2.3.0-BETA1","v2.3.0-BETA2","v2.3.0-RC1","v2.3.1","v2.3.10","v2.3.11","v2.3.12","v2.3.13","v2.3.14","v2.3.15","v2.3.16","v2.3.17","v2.3.18","v2.3.19","v2.3.2","v2.3.20","v2.3.21","v2.3.22","v2.3.23","v2.3.24","v2.3.25","v2.3.26","v2.3.27","v2.3.28","v2.3.29","v2.3.3","v2.3.30","v2.3.31","v2.3.32","v2.3.33","v2.3.34","v2.3.35","v2.3.36","v2.3.37","v2.3.38","v2.3.39","v2.3.4","v2.3.40","v2.3.41","v2.3.42","v2.3.5","v2.3.6","v2.3.7","v2.3.8","v2.3.9","v2.4.0","v2.4.0-BETA1","v2.4.0-BETA2","v2.4.0-RC1","v2.4.1","v2.4.10","v2.4.2","v2.4.3","v2.4.4","v2.4.5","v2.4.6","v2.4.7","v2.4.8","v2.4.9","v2.5.0","v2.5.0-BETA1","v2.5.0-BETA2","v2.5.0-RC1","v2.5.1","v2.5.10","v2.5.11","v2.5.12","v2.5.2","v2.5.3","v2.5.4","v2.5.5","v2.5.6","v2.5.7","v2.5.8","v2.5.9","v2.6.0","v2.6.0-BETA1","v2.6.0-BETA2","v2.6.1","v2.6.10","v2.6.11","v2.6.12","v2.6.13","v2.6.2","v2.6.3","v2.6.4","v2.6.5","v2.6.6","v2.6.7","v2.6.8","v2.6.9","v2.7.0","v2.7.0-BETA1","v2.7.0-BETA2","v2.7.1","v2.7.10","v2.7.11","v2.7.12","v2.7.13","v2.7.14","v2.7.15","v2.7.16","v2.7.17","v2.7.18","v2.7.19","v2.7.2","v2.7.20","v2.7.21","v2.7.22","v2.7.23","v2.7.24","v2.7.25","v2.7.26","v2.7.27","v2.7.28","v2.7.29","v2.7.3","v2.7.30","v2.7.31","v2.7.32","v2.7.33","v2.7.34","v2.7.35","v2.7.36","v2.7.37","v2.7.38","v2.7.39","v2.7.4","v2.7.40","v2.7.41","v2.7.42","v2.7.43","v2.7.44","v2.7.45","v2.7.46","v2.7.47","v2.7.48","v2.7.49","v2.7.5","v2.7.50","v2.7.51","v2.7.52","v2.7.6","v2.7.7","v2.7.8","v2.7.9","v2.8.0","v2.8.0-BETA1","v2.8.1","v2.8.10","v2.8.11","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