Description
Mattermost versions 10.11.x <= 10.11.1, 10.10.x <= 10.10.2, 10.5.x <= 10.5.10 fail to verify a user has permission to join a Mattermost team using the original invite token which allows any attacked to join any team on a Mattermost server regardless of restrictions via manipulating the OAuth state.
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 ≤ 10.11.1affected10.10.0 to ≤ 10.10.2affected10.5.0 to ≤ 10.5.10affected10.12.0unaffected10.11.2unaffected10.10.3unaffected10.5.11unaffected