CVE-2026-45754 Details
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.
A vulnerability exists in the Symfony Mailjet mailer bridge and LOX24 notifier bridge webhook parsers, prior to versions 6.4.40, 7.4.12, and 8.0.12. The parsers received configured webhook secrets but failed to verify them, allowing unauthenticated POST requests to inject forged event payloads. This lack of verification could lead to the corruption of suppression lists and manipulation of delivery metrics.
This vulnerability has been patched in Symfony versions 6.4.40, 7.4.12, and 8.0.12. Users should update to these versions.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 21, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | [email protected] |
| CWE-306 | Missing Authentication for Critical Function | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| sensiolabs symfony | >= 6.4.0, < 6.4.40 >= 7.0.0, < 7.4.12 >= 8.0.0, < 8.0.12 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 21, 2026 | CVE Modified | CISA-ADP |
| Jul 16, 2026 | Initial Analysis | [email protected] |
| Jul 14, 2026 | New CVE Received | [email protected] |