CVE-2025-41423 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 permissions for the API endpoint /plugins/playbooks/api/v0/signal/keywords/ignore-thread allowing any user or attacker to delete posts containing actions created by the Playbooks bot even without channel access or appropriate permissions.

Reference

https://mattermost.com/security-updates