CVE-2026-6341 — Incomplete group locking implementation
Mattermost Plugins versions <=11.5 11.1.5 10.13.11 11.3.4.0 fail to have API-level checks on which groups the user can create issues or attach comments to which allows a user th…
Published: 2026-05-18 · CVSS: 4.3 · CVSS 3.1
Mattermost Plugins versions <=11.5 11.1.5 10.13.11 11.3.4.0 fail to have API-level checks on which groups the user can create issues or attach comments to which allows a user that is member of multiple groups to create issues to a locked group via direct API requests. Mattermost Advisory ID: MMSA-2026-00602
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7