https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-06T09:55:40.680583+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/euvd-2026-5056 EUVD-2026-5056 2026-10-06T09:55:40.744918+00:00 EUVD-2026-5056 https://cve.radiocsirt.org/vuln/fkie_cve-2024-32000 fkie_cve-2024-32000 2026-10-06T09:55:40.744957+00:00

matrix-appservice-irc is a Node.js IRC bridge for the Matrix messaging protocol. 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. As a precondition to the attack, the malicious user needs to know the event ID of the message they want to leak, as well as to be joined to both the Matrix room and the IRC channel it is bridged to. The message reply containing the leaked message content is visible to IRC channel members when this happens. matrix-appservice-irc 2.0.0 checks whether the user has permission to view an event before constructing a reply. Administrators should upgrade to this version. It's possible to limit the amount of information leaked by setting a reply template that doesn't contain the original message. See these lines `601-604` in the configuration file linked.

 https://cve.radiocsirt.org/vuln/ghsa-wm4w-7h2q-3pf7 GHSA-wm4w-7h2q-3pf7 — Matrix IRC Bridge truncated content of messages can be leaked 2026-10-06T09:55:40.744997+00:00

Affected: npm: matrix-appservice-irc

### Impact

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. As a precondition to the attack, the malicious user needs to know the event ID of the message they want to leak, as well as to be joined to both the Matrix room and the IRC channel it is bridged to.

The message reply containing the leaked message content is visible to IRC channel members when this happens.

### Patches

matrix-appservice-irc 2.0.0 checks whether the user has permission to view an event before constructing a reply. Administrators should upgrade to this version.

### Workarounds

It's possible to limit the amount of information leaked by setting a reply template that doesn't contain the original message. See [these lines](https://github.com/matrix-org/matrix-appservice-irc/blob/d5d67d1d3ea3f0f6962a0af2cc57b56af3ad2129/config.sample.yaml#L601-L604) in the configuration file.

### References https://github.com/matrix-org/matrix-appservice-irc/pull/1799

### For more information

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

 https://cve.radiocsirt.org/vuln/gsd-2024-32000 gsd-2024-32000 2026-10-06T09:55:40.745038+00:00 gsd-2024-32000