Description
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.9.x <= 10.9.2, 10.10.x <= 10.10.0 fail to validate upload types in remote cluster upload sessions which allows a system admin to upload non-attachment file types via shared channels that could potentially be placed in arbitrary filesystem directories.
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
10.8.0 to ≤ 10.8.3affected10.5.0 to ≤ 10.5.8affected9.11.0 to ≤ 9.11.17affected10.9.0 to ≤ 10.9.2affected10.10.0 to ≤ 10.10.0affected10.11.0unaffected10.8.4unaffected10.5.9unaffected9.11.18unaffected10.9.3unaffected10.10.1unaffected