https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-18T03:33:27.477263+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/euvd-2026-233720 EUVD-2026-233720 2026-10-18T03:33:27.480030+00:00 EUVD-2026-233720 https://cve.radiocsirt.org/vuln/fkie_cve-2022-39202 fkie_cve-2022-39202 2026-10-18T03:33:27.480060+00:00

matrix-appservice-irc is an open source Node.js IRC bridge for Matrix. The Internet Relay Chat (IRC) protocol allows you to specify multiple modes in a single mode command. Due to a bug in the underlying matrix-org/node-irc library, affected versions of matrix-appservice-irc perform parsing of such modes incorrectly, potentially resulting in the wrong user being given permissions. Mode commands can only be executed by privileged users, so this can only be abused if an operator is tricked into running the command on behalf of an attacker. The vulnerability has been patched in matrix-appservice-irc 0.35.0. As a workaround users should refrain from entering mode commands suggested by untrusted users. Avoid using multiple modes in a single command.

 https://cve.radiocsirt.org/vuln/ghsa-cq7q-5c67-w39w GHSA-cq7q-5c67-w39w — matrix-appservice-irc vulnerable to IRC mode parameter confusion 2026-10-18T03:33:27.480093+00:00

Affected: npm: matrix-appservice-irc

### Impact

IRC allows you to specify multiple modes in a single mode command. Due to a bug in the underlying matrix-org/node-irc library, affected versions of matrix-appservice-irc perform parsing of such modes incorrectly, potentially resulting in the wrong user being given permissions.

Mode commands can only be executed by privileged users, so this can only be abused if an operator is tricked into running the command on behalf of an attacker.

### Patches

The vulnerability has been patched in matrix-appservice-irc 0.35.0.

### Workarounds

Refrain from entering mode commands suggested by untrusted users. Avoid using multiple modes in a single command.

### References

- https://matrix.org/blog/2022/09/13/security-release-of-matrix-appservice-irc-0-35-0-high-severity

### Credits

Discovered and reported by [Val Lorentz](https://valentin-lorentz.fr/).

### For more information

If you have any questions or comments about this advisory email us at [security@matrix.org](mailto:security@matrix.org).

 https://cve.radiocsirt.org/vuln/gsd-2022-39202 gsd-2022-39202 2026-10-18T03:33:27.480130+00:00 gsd-2022-39202