Our servers are protected against the PHP security vulnerability disclosed in October. The update was installed on 21 October 2026. More about php2shell

Patch

Mattermost 12.0

Mattermost 12.0 gets security updates until 15/01/2027.

Supported

Latest version: 12.0.1, released on 22/10/2026

End of support: 15/01/2027

Vulnerabilities in Mattermost 12.0

We are loading the vulnerabilities of Mattermost from the NVD. Until then this page shows versions and end of support only.

Get notified

Add Mattermost with your version and Erseni Patch writes to you about new versions, vulnerabilities in exactly your version and the end of support.

Watch Mattermost 12.0

Already have an account? Log in and add Mattermost 12.0

All branches of Mattermost