Description
Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to enforce access permissions on the Agents plugin which allows other users to determine when users had read channels via channel member objects
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Mattermost Mattermost
Default version status: unaffected
10.11.0 to ≤ 10.11.3affected10.5.0 to ≤ 10.5.11affected11.0.0unaffected10.11.4unaffected10.5.12unaffected