symfony: Symfony is a PHP framework for web and console applications and a set of reusable PHP components
CVE-2026-48747 is fixed in symfony on 1 platform by DEBIAN-CVE-2026-48747 (version 7.4.13+dfsg-1), released June 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 7.4.13 and 8.0.13, MailomatRequestParser::validateSignature() parsed X-MOM-Webhook-Signature as algo=signature and passed the request-selected algorithm to hash_hmac(), allowing a signature algorithm downgrade instead of enforcing Mailomat's documented SHA-256 webhook signature. This issue is fixed in versions 7.4.13 and 8.0.13.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| symfony · Debian 14 | 7.4.13+dfsg-1 | DEBIAN-CVE-2026-48747 | Jun 24, 2026 |
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