Mattermost 11.x — End of Life
EOL soonMattermost 11.x is partially supported: only 11.11, 11.10, 11.7 still receive security fixes, the longest-lived (11.7) until May 15, 2027, in 204 days. The most recent release in this series is 11.11.3. No CVE is currently tracked for Mattermost 11.x. The next major version is Mattermost 12. See Mattermost 12 →
Mattermost 11.x — All releases
| Version | Released | Active support | EOL date | Latest patch | Status | Alert me |
|---|---|---|---|---|---|---|
| 11.11 | Sep 16, 2026 | — | Dec 15, 2026 | 11.11.3 | EOL soon | |
| 11.10 | Aug 14, 2026 | — | Nov 15, 2026 | 11.10.4 | EOL soon | |
| 11.9 | Jul 16, 2026 | — | Oct 15, 2026 | 11.9.2 | EOL | |
| 11.8 | Jun 16, 2026 | — | Sep 15, 2026 | 11.8.5 | EOL | |
| 11.7 | May 15, 2026 | — | May 15, 2027 | 11.7.14 | Active | |
| 11.6 | Apr 16, 2026 | — | Jul 15, 2026 | 11.6.6 | EOL | |
| 11.5 | Mar 16, 2026 | — | Jun 15, 2026 | 11.5.7 | EOL | |
| 11.4 | Feb 16, 2026 | — | May 15, 2026 | 11.4.5 | EOL | |
| 11.3 | Jan 16, 2026 | — | Apr 15, 2026 | 11.3.3 | EOL | |
| 11.2 | Dec 16, 2025 | — | Mar 15, 2026 | 11.2.4 | EOL | |
| 11.1 | Nov 14, 2025 | — | Feb 15, 2026 | 11.1.3 | EOL | |
| 11.0 | Oct 16, 2025 | — | Jan 15, 2026 | 11.0.7 | EOL |
CVEs affecting Mattermost 11.x (0)
Mattermost 11.x will reach end of life — migrate to Mattermost 12.x
Mattermost 12.x is the next major release. Plan your upgrade before Mattermost 11.x stops receiving security patches.
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[](https://eolcanary.com/explore/mattermost/11)Frequently asked questions
Is Mattermost 11 end of life?
Partially. 9 of the 12 Mattermost 11.x releases have reached end of life. Still supported: 11.11, 11.10, 11.7 (until May 15, 2027 at the latest).
What CVEs affect Mattermost 11?
No CVEs are currently tracked for Mattermost 11.x in the NVD data we monitor.
What is the latest Mattermost 11 version?
The latest Mattermost 11.x patch release is 11.11.3, released on October 22, 2026. Always run the latest patch to benefit from all security fixes.
How to migrate from Mattermost 11 to Mattermost 12?
To migrate from Mattermost 11 to Mattermost 12: (1) review the official Mattermost 12 migration guide for breaking changes, (2) update dependencies and configuration accordingly, (3) test thoroughly in a staging environment, (4) deploy with a rollback plan. Starting early gives you time to resolve compatibility issues before your current version reaches end of life.
Is it safe to run Mattermost 11 in production?
Only on a supported release (11.11, 11.10, 11.7). Support for Mattermost 11.7 ends on May 15, 2027. Make sure you run the latest patch (11.11.3) to have all security fixes applied.
Data sourced from endoflife.date · CVE data from NVD · EPSS from FIRST.org · KEV from CISA