CVE-2026-45754

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 6.4.40, 7.4.12, and 8.0.12, the Mailjet mailer bridge and LOX24 notifier bridge webhook parsers received configured webhook secrets but did not verify them, allowing unauthenticated POST requests to inject forged Mailjet and LOX24 event payloads. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.

Score

CVSS 4.0 6.9 Medium

Status

Analyzed - security-advisories@github.com

Published

2026-07-14

Last modified

2026-07-21

Weaknesses

CWE-287, CWE-306

Affected products

• Symfony (Sensiolabs)
• Lox24-notifier (Symfony)
• Mailjet-mailer (Symfony)
• Symfony (Symfony)

References

• https://github.com/symfony/symfony/commit/3e52bf5ab733ee32e35eeeeb2631d859c941838e
• https://github.com/symfony/symfony/commit/4aaa45dd054f73445f1ab254968b7e60b546cc77
• https://github.com/symfony/symfony/releases/tag/v6.4.40
• https://github.com/symfony/symfony/releases/tag/v7.4.12
• https://github.com/symfony/symfony/releases/tag/v8.0.12
• https://github.com/symfony/symfony/security/advisories/GHSA-64hg-93w9-fc35