Mattermost security update 5.9.1/5.8.2/4.10.9 (ESR) released

We are releasing a recommended security update via Mattermost Team Edition 5.9.1, 5.8.2 and 4.10.9 (ESR) and Mattermost Enterprise Edition 5.9.1, 5.8.2 and 4.10.9 (ESR). This security update addresses a high-level vulnerability discovered during a security research review by Leandro Chaves.

Follow the standard upgrade instructions to apply the updates.

Per the Mattermost Responsible Disclosure Policy, details of the update will be posted on our security updates page 30 days after release.

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Amy Blais

Amy Blais is the Release Manager at Mattermost, Inc. Her other roles include Community and Customer Support. She previously served as the company’s Associate Marketing Manager.

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