VULNERABILITY INTELLIGENCE

CVE-2025-20051

CVSS score9.9 CRITICAL
EPSS probability0.61%
CISA KEVNot currently listed
Published2025-02-24
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Description

Mattermost versions 10.4.x <= 10.4.1, 9.11.x <= 9.11.7, 10.3.x <= 10.3.2, 10.2.x <= 10.2.2 fail to properly validate input when patching and duplicating a board, which allows a user to read any arbitrary file on the system via duplicating a specially crafted block in Boards.

Weakness classification

  • responsibledisclosure@mattermost.com: CWE-22

Primary references