Homepage

Improper Input Validation Affecting matrix-synapse package, versions <1.121.0-6

Severity

 Recommended
low

Based on default assessment until relevant scores are available.

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Improper Input Validation vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-DEBIAN13-MATRIXSYNAPSE-9538746
  • published28 Mar 2025
  • disclosed27 Mar 2025
Report a new vulnerability Found a mistake?

Introduced: 27 Mar 2025

NewCVE-2025-30355  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Debian:13 matrix-synapse to version 1.121.0-6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream matrix-synapse package and not the matrix-synapse package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

Synapse is an open source Matrix homeserver implementation. A malicious server can craft events which, when received, prevent Synapse version up to 1.127.0 from federating with other servers. The vulnerability has been exploited in the wild and has been fixed in Synapse v1.127.1. No known workarounds are available.