CVE-2025-6465 – github.com/mattermost/mattermost-server

Package

Manager: go
Name: github.com/mattermost/mattermost-server
Vulnerable Version: >=10.8.0 <10.8.4 || >=10.5.0 <10.5.9 || >=10.9.0 <10.9.4 || =10.10.0 || >=10.10.0 <10.10.1

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00051 pctl0.15624

Details

Mattermost Fails to Sanitize File Names 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.

Metadata

Created: 2025-08-21T18:31:29Z
Modified: 2025-08-29T21:00:27Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-pj6f-rc94-gw53/GHSA-pj6f-rc94-gw53.json
CWE IDs: ["CWE-22"]
Alternative ID: GHSA-pj6f-rc94-gw53
Finding: F063
Auto approve: 1