CVE-2025-25279

Name of the Vulnerable Software and Affected Versions Mattermost versions 9.11.x through 9.11.7 Mattermost versions 10.2.x through 10.2.2 Mattermost versions 10.3.x through 10.3.2 Mattermost versions 10.4.x through 10.4.1

Description The issue arises from the improper validation of board blocks when importing boards, allowing an attacker to read any arbitrary file on the system. This can be achieved by importing and exporting a specially crafted import archive in Boards.

Recommendations For versions 9.11.x through 9.11.7, update to a version later than 9.11.7 to resolve the issue. For versions 10.2.x through 10.2.2, update to a version later than 10.2.2 to resolve the issue. For versions 10.3.x through 10.3.2, update to a version later than 10.3.2 to resolve the issue. For versions 10.4.x through 10.4.1, update to a version later than 10.4.1 to resolve the issue.