github.com/mattermost/mattermost-plugin-boards

2 known vulnerabilities.

All Critical High Medium Low Exploited only Public exploit

2 results · Feed

Medium 4.3

CVE-2026-2461 Public exploit

Missing authorization check allows unauthorized modification of other users' comments on a board

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 Advisor…

Mattermost Mattermost github.com/mattermost/mattermost-plugin-boards Go

Mar 16, 2026
Low 3.1

CVE-2025-9081

IDOR in board file download allows any user to download any file by UUID

Mattermost versions 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate access controls which allows any authenticated user to download sensitive files via board file download endpoint using UUID enumeration

Mattermost Mattermost github.com/mattermost/mattermost-server github.com/mattermost/mattermost-server/v6 Go

Sep 19, 2025