# CVE-2026-45754: symfony: Symfony is a PHP framework for web and console applications and a set of reusable PHP components

CVE-2026-45754 is fixed in symfony on 1 platform, first by DEBIAN-CVE-2026-45754, released May 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-45754
- Priority: Routine
- CVSS: 5.3 (medium)
- EPSS: 0.0045
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 14, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | symfony Debian 13.5 (trixie) | 6.4.41+dfsg-0+deb13u1 | [DEBIAN-CVE-2026-45754](https://patchblox.com/security/data/fix/linux/debian-cve-2026-45754.md) | May 27, 2026 |
| Linux | symfony Debian 14 | 7.4.12+dfsg-1 | [DEBIAN-CVE-2026-45754](https://patchblox.com/security/data/fix/linux/debian-cve-2026-45754.md) | May 27, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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