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.
References
History

Thu, 21 Aug 2025 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 21 Aug 2025 17:15:00 +0000

Type Values Removed Values Added
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.
Title Path traversal in image upload with preview overwrite
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Mattermost

Published: 2025-08-21T17:01:42.866Z

Updated: 2025-08-21T17:30:45.951Z

Reserved: 2025-06-21T00:52:35.389Z

Link: CVE-2025-6465

cve-icon Vulnrichment

Updated: 2025-08-21T17:21:05.309Z

cve-icon NVD

Status : Received

Published: 2025-08-21T17:15:32.707

Modified: 2025-08-21T17:15:32.707

Link: CVE-2025-6465

cve-icon Redhat

No data.