Mattermost security updates 11.0.4, 10.12.2, 10.11.5 (ESR), and 10.5.13 (ESR) released 

We’re informing you about a Mattermost security update, which addresses Critical severity vulnerabilities. Upgrading to this release as soon as possible is highly recommended. The security update is available for Mattermost dot releases 11.0.4, 10.12.2, 10.11.5 (Extended Support Release), and 10.5.13 (Extended Support Release) for both Team Edition and Enterprise Edition. They are available for download here. You can follow the standard upgrade instructions to apply the updates. 

The 11.0.4 version also includes the following fix: 

• Fixed an issue where plugin configuration settings were incorrectly sanitized, causing API endpoints and plugins to receive masked values instead of actual configuration values. 

The 11.0.4, 10.12.2, 10.11.5, and v10.5.13 versions also include the following fix: 

• Pre-packaged Boards plugin version v9.1.7. 

Customer safety and data security are the utmost priorities for Mattermost. For our customers’ protection, and as outlined in our Responsible Disclosure policy, Mattermost does not disclose specifics on this vulnerability until 30 days after this announcement. After 30 days, we will publish specific details on the vulnerability on our Security Updates webpage.