Description
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to disallow the modification of local users when syncing users in shared channels. which allows a malicious remote to overwrite an existing local user.
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
9.9.0affected9.5.0 to ≤ 9.5.6affected9.7.0 to ≤ 9.7.5affected9.8.0 to ≤ 9.8.1affected9.10.0unaffected9.9.1unaffected9.5.7unaffected9.7.6unaffected9.8.2unaffected