mattermost/mattermost-plugin-boards · Security
Mattermost Boards Plugin fails to implement authorisation checks on comment block modifications
- GHSA ID
- GHSA-hf8w-x9h5-5gf9
- CVE ID
- CVE-2026-2461
- Severity
- medium
- Published
- Updated
- CVSS
- 4.3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CVSS v3
- 4.3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Description
Mattermost Plugins versions <=11.3 11.0.3 11.2.2 10.10.11.0 fail to implement authorisation checks on comment block modifications, which allows an authorised attacker with editor permission to modify comments created by other board members. Mattermost Advisory ID: MMSA-2025-00559
CWEs
- CWE-639 · Authorization Bypass Through User-Controlled Key