CVE-2026-45067
mediumPriorität · verfolgen · 10EPSS 0.006 · 48. PerzentilExploit · PoCEUUSEPSS · bewertet 2026-10-27
### Description `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. The 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:<...>` / `RCPT TO:<...>` protocol lines, turning the embedded CRLF into a new mail header and/or a new SMTP command. ### Resolution The `Address` constructor now rejects addresses containing line breaks. The patch for this issue is available [here](https://github.com/symfony/symfony/commit/dc2dbd29211eb4ddc451373fa1374fb926e94604) for branch 5.4. ### Credits We would like to thank Claude Mythos Preview (via Project Glasswing) for reporting the issue and providing the fix.
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · low–medium · 2.9–6.3
SSVC
Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.
schwächen
Die CWE-Schwächeklassen, zu denen dies gehört.
Exploits (1)
Öffentlicher Proof-of-Concept- und Exploit-Code.
- HORKimhab/CVE-2026-45067CVE-2026-45067 - DraftPoC · poc_in_github
betroffene Produkte (12)
Betroffene Produkte und Versionsbereiche.
Advisories (1)
Hersteller- und Ökosystem-Meldungen dazu.
- GHSA-qpmx-3rfj-7rhvSymfony has Email Header / SMTP Command Injection via CRLF in Symfony\Component\Mime\Address2026-05-27ghsa · osvUS
### Description `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. The 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:<...>` / `RCPT TO:<...>` protocol lines, turning the embedded CRLF into a new mail header and/or a new SMTP command. ### Resolution The `Address` constructor now rejects addresses containing line breaks. The patch for this issue is available [here](https://github.com/symfony/symfony/commit/dc2dbd29211eb4ddc451373fa1374fb926e94604) for branch 5.4. ### Credits We would like to thank Claude Mythos Preview (via Project Glasswing) for reporting the issue and providing the fix.
auch bekannt als (3)
Weitere Namen und Kennungen dieser Entität.
quellen
Welche Quellen diesen Datensatz belegen und wann.
Referenzen (19)
Externe Belege — Patches, Meldungen, Analysen.
- https://github.com/symfony/symfony/commit/a1c42cbe517bc146a54da7505a107ded317478fecnnvd
- https://github.com/symfony/symfony/releasesPatchcnnvd
- https://github.com/symfony/symfony/releases/tag/v5.4.52cnnvd
- https://github.com/symfony/symfony/releases/tag/v6.4.40cnnvd
- https://github.com/symfony/symfony/releases/tag/v7.4.12cnnvd
- https://github.com/symfony/symfony/releases/tag/v8.0.12cnnvd
- https://github.com/symfony/symfony/security/advisories/GHSA-qpmx-3rfj-7rhvcnnvd
- https://github.com/symfony/symfony/commit/a1c42cbe517bc146a54da7505a107ded317478feenisa_euvd
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