Description
Mattermost versions 10.9.x <= 10.9.1, 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate file paths during plugin import operations which allows restricted admin users to install unauthorized custom plugins via path traversal in the import functionality, bypassing plugin signature enforcement and marketplace restrictions.
Problem types
CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Product status
10.9.0
10.8.0
10.5.0
9.11.0
10.10.0
10.9.2
10.8.4
10.5.9
9.11.18
Credits
Dawid Kulikowski (daw10)
References
mattermost.com/security-updates
