CVE-2025-9079 HIGH

CVE-2025-9079: Admin RCE via prepackaged plugins by way of misconfigured imports directory

Vendor Mattermost
Product Mattermost
Weakness CWE-22 · Path traversal
Published September 19, 2025
Last update February 26, 2026
View on NVD All CVEs

CVSS base score

8.0/10
Attack vector Network
Attack complexity High
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.1, 10.9.x <= 10.9.3 fail to validate import directory path configuration which allows admin users to execute arbitrary code via malicious plugin upload to prepackaged plugins directory

Key dates

02Disclosure timeline

September 19, 2025 CVE published
February 26, 2026 Record updated