To get security updates fast, subscribe.

Mattermost Security Updates

To report security issues please see the Mattermost Responsible Disclosure Policy. To sign up for notifications when a security fix is released, please join our Security Bulletin mailing list. Mattermost software undergoes security review and penetration testing by organizations preparing for deployment, by leaders in the global security research community, and through internal review and …

Mattermost security update 4.3.1/4.2.1/4.1.2 released

We are releasing a recommended security update via Mattermost Team Edition 4.3.1, 4.2.1, and 4.1.2 and Mattermost Enterprise Edition 4.3.1, 4.2.1, and 4.1.2. This security update addresses a low severity vulnerability discovered during a security research review by Frans Rosén. Follow the standard upgrade instructions to apply the updates. Per the Mattermost Responsible Disclosure Policy, …

Mattermost 3.7.3 security update released

We are releasing Mattermost version 3.7.3 for Team Edition (TE) and Enterprise Edition (EE). It includes a high severity security fix and upgrading is recommended. Per the Mattermost Responsible Disclosure Policy, details will be posted on our security updates page 14 days after release. This version also resolves a bug with telemetry data collection in the Mattermost 3.7 release. More …

Mattermost 3.6.2 security update released

We are releasing Mattermost version 3.6.2 for Team Edition (TE) and Enterprise Edition (EE). It includes a high severity security issue and upgrading is recommended. Per the Mattermost Responsible Disclosure Policy, details will be posted on our security updates page 14 days after release. This version also resolves the following bugs in the Mattermost 3.6 release: Improved …

Get the latest updates, releases, and more—delivered to your inbox.

Get help using Mattermost with Microsoft Office 365.Learn more >