CVE-2026-48747

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 hashhmac, allowing a signature...

CVE-2026-48747

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 hashhmac, allowing a signature...

PT-2026-44170

Name of the Vulnerable Software and Affected Versions mailomat-mailer affected versions not specified Description A Signature Algorithm Downgrade flaw exists in the mailomat-mailer component. This issue allows an attacker to perform complete Signature Forgery, which is the act of creating a...

Debian dla-4437 : dirmngr - security update

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4437 advisory. ------------------------------------------------------------------------- Debian LTS Advisory DLA-4437-1 [email protected] https://www.debian.org/lts/security/...

UBUNTU-CVE-2025-11934

Improper input validation in the TLS 1.3 CertificateVerify signature algorithm negotiation in wolfSSL 5.8.2 and earlier on multiple platforms allows for downgrading the signature algorithm used. For example when a client sends ECDSA P521 as the supported signature algorithm the server previously...

CVE-2023-28602

Zoom for Windows clients prior to 5.13.5 contain an improper verification of cryptographic signature vulnerability. A malicious user may potentially downgrade Zoom Client components to previous versions...

CVE-2026-48747: Mailomat Mailer Webhook Parser Reads the HMAC Algorithm from the Request: Signature Algorithm Downgrade

More info at https://symfony.com/cve-2026-48747...