CVE-2025-36530 MEDIUM

CVE-2025-36530: Import Path Traversal Enables Unauthorized Unsigned Plugin Installation

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

6.8/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

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