Mattermost 11.x — End of Life
EOL soonMattermost 11.x — All releases
| Version | Released | Active support | EOL date | Latest patch | Status | Alert me |
|---|---|---|---|---|---|---|
| 11.9 | Jul 16, 2026 | — | Oct 15, 2026 | 11.9.0 | EOL soon | |
| 11.8 | Jun 16, 2026 | — | Sep 15, 2026 | 11.8.4 | EOL soon | |
| 11.7 | May 15, 2026 | — | May 15, 2027 | 11.7.7 | 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)
Frequently asked questions
Is Mattermost 11 end of life?
Partially. Some Mattermost 11.x releases have reached EOL. Check the version table above for the exact status of each sub-release.
What CVEs affect Mattermost 11?
No CVEs are currently tracked for Mattermost 11.x in our database. This may mean no vulnerabilities have been recorded yet, or the data is still syncing.
What is the latest Mattermost 11 version?
The latest Mattermost 11.x patch release is 11.9.0, released on July 8, 2026. Always run the latest patch to benefit from all security fixes.
When was Mattermost 11 first released?
Mattermost 11.0 was initially released on July 16, 2026. See the full version timeline in the table above.
Is it safe to run Mattermost 11 in production?
Mattermost 11 is still supported and safe for production use until October 15, 2026. Ensure you are running the latest patch version (11.9.0) to have all security fixes applied.
Data sourced from endoflife.date · CVE data from NVD · EPSS from FIRST.org · KEV from CISA