CVE-2025-20033 Information

Description

Mattermost versions 10.2.0 9.11.x <= 9.11.5 10.0.x <= 10.0.3 10.1.x <= 10.1.3 fail to properly validate post types which allows attackers to deny service to users with the sysconsole_read_plugins permission via creating a post with the custom_pl_notification type and specific props.

Reference

https://mattermost.com/security-updates