CVE-2025-6465 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Mattermost	Mattermost

No data.

No data.

References

Link	Providers
https://mattermost.com/security-updates

History

Sat, 23 Aug 2025 11:00:00 +0000

Type	Values Removed	Values Added
First Time appeared		Mattermost Mattermost mattermost
Vendors & Products		Mattermost Mattermost mattermost

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		https://mattermost.com/security-updates
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'}`

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

Vulnrichment

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

NVD

Status : Awaiting Analysis

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

Modified: 2025-08-22T18:08:51.663

Link: CVE-2025-6465

Redhat

No data.

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