CVE-2025-9079
September 19, 2025
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.1, 10.9.x <= 10.9.3 fail to validate import directory path configuration which allows admin users to execute arbitrary code via malicious plugin upload to prepackaged plugins directory
Affected Packages
github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v9.11.0 <v9.11.18Fix Suggestion:
Update to version v9.11.18github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v10.10.0 <v10.10.2Fix Suggestion:
Update to version v10.10.2github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v10.9.0 <v10.9.4Fix Suggestion:
Update to version v10.9.4github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v10.8.0 <v10.8.4Fix Suggestion:
Update to version v10.8.4github.com/mattermost/mattermost/server/v8 (GO):
Affected version(s) >=v8.0.0-20230429093631-aac4f2337933 <v8.0.0-20250707221302-a8fa77f107efFix Suggestion:
Update to version v8.0.0-20250707221302-a8fa77f107efgithub.com/mattermost/mattermost-server (GO):
Affected version(s) >=v10.5.0 <v10.5.9Fix Suggestion:
Update to version v10.5.9Related Resources (11)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
8
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
EPSS
Base Score:
0.03
