Description
Mattermost versions 8.1.x before 8.1.11, 9.3.x before 9.3.3, 9.4.x before 9.4.4, and 9.5.x before 9.5.2 fail to authenticate the source of certain types of post actions, allowing an authenticated attacker to create posts as other users via a crafted post action.
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
9.5.0 to ≤ 9.5.1affected9.4.0 to ≤ 9.4.3affected9.3.0 to ≤ 9.3.2affected8.1.0 to ≤ 8.1.10affected9.6.0unaffected9.5.2unaffected9.4.4unaffected9.3.3unaffected8.1.11unaffected