CVE-2025-36530

Import Path Traversal Enables Unauthorized Unsigned Plugin Installation

State: Published
Severity: 6.8 Medium
Published: Aug 21, 2025
Updated: Aug 21, 2025
Reserved: Jul 22, 2025

Description

Mattermost versions 10.9.x <= 10.9.1, 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate file paths during plugin import operations which allows restricted admin users to install unauthorized custom plugins via path traversal in the import functionality, bypassing plugin signature enforcement and marketplace restrictions.

Scores

CVSS	Score	Vector	Source
3.1	6.8 Medium	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N	Mattermost

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected Products

Product	Versions
MattermostMattermost	10.9.0 through 10.9.1Affected 10.8.0 through 10.8.3Affected 10.5.0 through 10.5.8Affected 9.11.0 through 9.11.17Affected 10.10.0Not affected 10.9.2Not affected 10.8.4Not affected 10.5.9Not affected 9.11.18Not affected

References

https://mattermost.com/security-updates

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.