VULNERABILITY INTELLIGENCE

CVE-2025-6465

CVSS score4.3 MEDIUM
EPSS probability0.77%
CISA KEVNot currently listed
Published2025-08-21
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Description

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.

Weakness classification

  • responsibledisclosure@mattermost.com: CWE-22

Primary references