CVEvulnerability

CVE-2026-48747

6.3 MEDIUM Published 2026-07-14 Modified 2026-07-15 Official page ↗
Status
Analyzed
Published
2026-07-14
Last modified
2026-07-15
Assigner
[email protected]
CVSS 4.0 ([email protected])
6.3 MEDIUM — CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weaknesses
CWE-347, CWE-757

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.

Affected configurations

• sensiolabs symfony (>= 7.2.0 < 7.4.13) • sensiolabs symfony (>= 8.0.0 < 8.0.13)

Related

Weakness · CWE (2)

  • CWE-347 Improper Verification of Cryptographic Signature weakness
  • CWE-757 Selection of Less-Secure Algorithm During Negotiation weakness

References