CVE-2025-6465 MEDIUM

CVE-2025-6465: Path traversal in image upload with preview overwrite

Vendor Mattermost
Product Mattermost
Weakness CWE-22 · Path traversal
Published August 21, 2025
Last update August 21, 2025
View on NVD All CVEs

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 21, 2025 CVE published
August 21, 2025 Record updated