Description
Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to validate Advanced Logging file target paths which allows system administrators to read arbitrary host files via malicious AdvancedLoggingJSON configuration in support packet generation. Mattermost Advisory ID: MMSA-2025-00562
Problem types
CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Product status
11.4.0 (semver)
11.3.0 (semver)
11.2.0 (semver)
10.11.0 (semver)
11.5.0
11.4.1
11.3.2
11.2.4
10.11.12
Credits
mufeedvh
References
mattermost.com/security-updates (MMSA-2025-00562)