Medium severity5.3OSV Advisory· Published Jul 14, 2026· Updated Jul 21, 2026
CVE-2026-45754
CVE-2026-45754
Description
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.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
symfony/lox24-notifierPackagist | >= 7.1.0, < 7.4.12 | 7.4.12 |
symfony/lox24-notifierPackagist | >= 8.0.0, < 8.0.12 | 8.0.12 |
symfony/symfonyPackagist | >= 6.4.0, < 6.4.40 | 6.4.40 |
symfony/symfonyPackagist | >= 7.0.0, < 7.4.12 | 7.4.12 |
symfony/symfonyPackagist | >= 8.0.0, < 8.0.12 | 8.0.12 |
symfony/mailjet-mailerPackagist | >= 6.4.0, < 6.4.40 | 6.4.40 |
symfony/mailjet-mailerPackagist | >= 7.0.0, < 7.4.12 | 7.4.12 |
symfony/mailjet-mailerPackagist | >= 8.0.0, < 8.0.12 | 8.0.12 |
Affected products
2v8.0.11, v7.4.11, v6.4.39, …+ 1 more
- (no CPE)range: v8.0.11, v7.4.11, v6.4.39, …
- (no CPE)range: <6.4.40, <7.4.12, <8.0.12
Patches
Vulnerability mechanics
References
11- github.com/symfony/symfony/commit/3e52bf5ab733ee32e35eeeeb2631d859c941838envdPatch
- github.com/symfony/symfony/commit/4aaa45dd054f73445f1ab254968b7e60b546cc77nvdPatchWEB
- github.com/symfony/symfony/security/advisories/GHSA-64hg-93w9-fc35nvdPatchVendor AdvisoryWEB
- github.com/advisories/GHSA-64hg-93w9-fc35ghsaADVISORY
- github.com/FriendsOfPHP/security-advisories/blob/master/symfony/lox24-notifier/CVE-2026-45754.yamlghsaWEB
- github.com/FriendsOfPHP/security-advisories/blob/master/symfony/mailjet-mailer/CVE-2026-45754.yamlghsaWEB
- github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45754.yamlghsaWEB
- github.com/symfony/symfony/releases/tag/v6.4.40nvdRelease Notes
- github.com/symfony/symfony/releases/tag/v7.4.12nvdRelease Notes
- github.com/symfony/symfony/releases/tag/v8.0.12nvdRelease Notes
- symfony.com/cve-2026-45754ghsaWEB
News mentions
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