CVE-2025-41395 Information

Description

Mattermost versions 10.4.x <= 10.4.2 10.5.x <= 10.5.0 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin which allows an attacker to create a specially crafted post with maliciously crafted props and cause a denial of service (DoS) of the web app for all users.

Reference

https://mattermost.com/security-updates