CVE-2025-36530

Import Path Traversal Enables Unauthorized Unsigned Plugin Installation

Published Aug 21, 2025 CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Solution

Update Mattermost to versions 10.10.0, 10.9.2, 10.8.4, 10.5.9, 9.11.18 or higher.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-25421 Mattermost Fails to Validate File Paths
Github GHSA Github GHSA GHSA-gq3r-5833-5532 Mattermost Fails to Validate File Paths
References
History
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
First Time appeared Mattermost
Mattermost mattermost
Vendors & Products Mattermost
Mattermost mattermost
Type Values Removed Values Added
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.
Title Import Path Traversal Enables Unauthorized Unsigned Plugin Installation
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
Aug 21, 2025, 1:50 PM
Reserved
Jul 22, 2025, 7:46 AM
Status
Analyzed
Published
Aug 21, 2025, 7:15 AM
Modified
Jun 17, 2026, 9:14 AM