CVE-2022-29166: Matrix Irc Bridge

High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days.

matrix-appservice-irc is a Node.js IRC bridge for Matrix. The vulnerability in node-irc allows an attacker to manipulate a Matrix user into executing IRC commands by having them reply to a maliciously crafted message. The vulnerability has been patched in matrix-appservice-irc 0.33.2. Refrain from replying to messages from untrusted participants in IRC-bridged Matrix rooms. There are no known workarounds for this issue.

Affected products

• Matrix Matrix Irc Bridge: before 0.33.2 (fixed in 0.33.2)

Published 2022-05-05. Last modified 2026-06-17.