Mattermost · Mattermost Plugins · CVE-2026-2461
**Name of the Vulnerable Software and Affected Versions**
Mattermost Plugins versions 10.10.11.0 through 11.3
**Description**
The Mattermost Plugins do not properly enforce authorization checks when modifying comment blocks. This allows an authorized attacker with editor permissions to modify comments created by other members. The vulnerable component is related to comment block modifications within the Mattermost Boards Plugin.
**Recommendations**
Update to a version of Mattermost Plugins later than 11.3.