Matrix IRC Bridge allows IRC command injection to own puppeted user

Impact

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.

Patches

The vulnerability has been patched in matrix-appservice-irc version 3.0.4.

For more information

If you have any questions or comments about this advisory, please email us at security at matrix.org.