Security Advisory

CVE-2026-48747

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-14 19:16:24

Last updated 2026-07-15 14:22:53

Assigner GitHub_M

CVSS score 6.3

State PUBLISHED

Description

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.

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