Matrix IRC Bridge allows IRC command injection to own puppeted user

Description

The matrix-appservice-irc bridge up to version 3.0.3 contains a vulnerability which can lead to arbitrary IRC command execution as the puppeted user. The attacker can only inject commands executed as their own IRC user.

Recommendation

Update the matrix-appservice-irc package to the latest compatible version. Followings are version details:

• Affected version(s): < 3.0.4
• Patched version(s): 3.0.4

References

• GHSA-5mvm-89c9-9gm5
• CVE-2025-27146
• CWE-77
• CWE-88
• CAPEC-310
• OWASP 2021-A3
• OWASP 2021-A6

Related Issues

• Finance.js vulnerable to DoS via the IRR function’s depth parameter - CVE-2025-56571
• Mermaid improperly sanitizes sequence diagram labels leading to XSS - CVE-2025-54881
• Payload does not invalidate JWTs after log out (GHSA-5v66-m237-hwf7) - CVE-2025-4643
• Vite's server.fs.deny bypassed with /. for files under project root - CVE-2025-46565

Tags:

npm

matrix-appservice-irc