CVE-2025-25279 Information

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 board blocks when importing boards which allows an attacker could read any arbitrary file on the system via importing and exporting a specially crafted import archive in Boards.

Reference

https://mattermost.com/security-updates