Matrix IRC Bridge truncated content of messages can be leaked

Description

The matrix-appservice-irc before version 2.0.0 can be exploited to leak the truncated body of a message if a malicious user sends a Matrix reply to an event ID they don’t have access to.

Recommendation

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

• Affected version(s): < 2.0.0
• Patched version(s): 2.0.0

References

• GHSA-wm4w-7h2q-3pf7
• CVE-2024-32000
• CWE-280
• CAPEC-310
• OWASP 2021-A4
• OWASP 2021-A6

Related Issues

• Malicious Matrix homeserver can leak truncated message content of messages it shouldn't have access to - CVE-2024-39691
• matrix-appservice-irc events can be crafted to leak parts of targeted messages from other bridged rooms - CVE-2023-38700
• Improper handling of multiline messages in node-irc affects matrix-appservice-irc - CVE-2022-29166
• Matrix IRC Bridge allows IRC command injection to own puppeted user - CVE-2025-27146

Tags:

npm

matrix-appservice-irc