Vulnerability DatabaseCVE-2025-6465
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CVE-2025-6465
August 21, 2025
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 10.10.x <= 10.10.0, 10.9.x <= 10.9.3 fail to sanitize file names which allows users with file upload permission to overwrite file attachment thumbnails via path traversal in file streaming APIs.
Affected Packages
https://github.com/mattermost/mattermost.git (GITHUB):
Affected version(s) >=v10.5.0 <v10.5.9
Fix Suggestion:
Update to version v10.5.9
https://github.com/mattermost/mattermost.git (GITHUB):
Affected version(s) =v10.10.0 <v10.10.1
Fix Suggestion:
Update to version v10.10.1
https://github.com/mattermost/mattermost.git (GITHUB):
Affected version(s) >=v10.9.0 <v10.9.4
Fix Suggestion:
Update to version v10.9.4
https://github.com/mattermost/mattermost.git (GITHUB):
Affected version(s) >=v10.8.0 <v10.8.4
Fix Suggestion:
Update to version v10.8.4
github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v10.10.0 <v10.10.1
Fix Suggestion:
Update to version v10.10.1
github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v10.8.0 <v10.8.4
Fix Suggestion:
Update to version v10.8.4
github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v10.9.0 <v10.9.4
Fix Suggestion:
Update to version v10.9.4
github.com/mattermost/mattermost-server (GO):
Affected version(s) >=v10.5.0 <v10.5.9
Fix Suggestion:
Update to version v10.5.9
Related Resources (5)
https://github.com/advisories/GHSA-pj6f-rc94-gw53
https://mattermost.com/security-updates
https://nvd.nist.gov/vuln/detail/CVE-2025-6465
https://pkg.go.dev/vuln/GO-2025-3906
https://github.com/mattermost/mattermost
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CVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-22
EPSS
Base Score:
0.07