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Mattermost security updates 11.6.2, 11.5.5, and 10.11.17 (ESR) released

calendar_today May 15, 2026 person Amy Blais domain mattermost

We’re informing you about a Mattermost security update, which addresses Medium to High severity vulnerabilities. We highly recommend that you apply the update. The security update is available for Mattermost dot releases 11.6.2, 11.5.5, and 10.11.17 (Extended Support Release) for both Team Edition and Enterprise Edition. They are available for download here. You can follow … Read More The post Mattermost security updates 11.6.2, 11.5.5, and 10.11.17 (ESR) released appeared first on Mattermost .

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