Mattermost security updates 11.1.2, 11.0.7, and 10.11.9 (ESR) released

We’re informing you about a Mattermost security update, which addresses low to medium severity vulnerabilities. We highly recommend that you apply the update.

The security update is available for Mattermost dot releases 11.1.2, 11.0.7, and 10.11.9 (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 10.11.9 version also includes the following fix: 

• Fixed an issue where pressing Shift+Up in the channel textbox to reply to a thread could cause the right‑hand sidebar (RHS) reply textbox to not focus. 

The 11.1.2 version also includes the following fixes: 

• Improved the performance of the post textbox and fixed typing bugs in the thread popout. 
• Fixed an issue where Chrome/Desktop App spell check on Windows often couldn’t correct typos 

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.