CVE-2026-48747
MEDIUM SEVERITYVulnerability Description
Symfony: Mailomat Mailer Webhook Parser Reads the HMAC Algorithm from the Request: Signature Algorithm Downgrade
Vulnerability Details
Published Date
Last Modified
Source
GitHub
Vendor
composer
Product
symfony/mailomat-mailer
External References
- https://github.com/symfony/symfony/security/advisories/GHSA-rrj9-5q2j-4gvr
- https://github.com/symfony/symfony/commit/bdfe9fe0d94d33dfaca0bc2fe0b00b54767b0c88
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/mailomat-mailer/CVE-2026-48747.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-48747.yaml
- https://symfony.com/cve-2026-48747
- https://github.com/advisories/GHSA-rrj9-5q2j-4gvr
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