Complete end-of-life dates, support windows, and security status for all Mattermost versions. Data sourced from endoflife.date and official vendor documentation. Updated at every deploy.
| Version | Latest Release | Release Date | EOL Date | Days | Status |
|---|---|---|---|---|---|
| 6.0 | 6.0.4 | Oct 8, 2021 | Jan 15, 2022 | 1575 days past EOL | EOL |
| 6.1 | 6.1.3 | Nov 11, 2021 | Feb 15, 2022 | 1544 days past EOL | EOL |
| 6.2 | 6.2.5 | Dec 13, 2021 | Mar 15, 2022 | 1516 days past EOL | EOL |
| 6.3 LTS | 6.3.10 | Jan 13, 2022 | Oct 15, 2022 | 1302 days past EOL | EOL |
| 6.4 | 6.4.3 | Feb 15, 2022 | May 15, 2022 | 1455 days past EOL | EOL |
| 6.5 | 6.5.2 | Mar 11, 2022 | Jun 15, 2022 | 1424 days past EOL | EOL |
| 6.6 | 6.6.2 | Apr 7, 2022 | Jul 15, 2022 | 1394 days past EOL | EOL |
| 6.7 | 6.7.2 | May 11, 2022 | Aug 15, 2022 | 1363 days past EOL | EOL |
| 7.0 | 7.0.2 | Jun 13, 2022 | Sep 15, 2022 | 1332 days past EOL | EOL |
| 7.1 LTS | 7.1.9 | Jul 13, 2022 | May 15, 2023 | 1090 days past EOL | EOL |
| 7.2 | 7.2.1 | Aug 11, 2022 | Nov 15, 2022 | 1271 days past EOL | EOL |
| 7.3 | 7.3.1 | Sep 14, 2022 | Dec 15, 2022 | 1241 days past EOL | EOL |
| 7.4 | 7.4.1 | Oct 12, 2022 | Jan 15, 2023 | 1210 days past EOL | EOL |
| 7.5 LTS | 7.5.2 | Nov 9, 2022 | Feb 15, 2023 | 1179 days past EOL | EOL |
| 7.7 | 7.7.4 | Jan 13, 2023 | Apr 15, 2023 | 1120 days past EOL | EOL |
| 7.8 LTS | 7.8.15 | Feb 14, 2023 | Nov 15, 2023 | 906 days past EOL | EOL |
| 7.9 | 7.9.6 | Mar 14, 2023 | Jul 15, 2023 | 1029 days past EOL | EOL |
| 7.10 | 7.10.5 | Apr 12, 2023 | Aug 15, 2023 | 998 days past EOL | EOL |
| 8.0 | 8.0.4 | Jul 9, 2023 | Oct 15, 2023 | 937 days past EOL | EOL |
| 8.1 LTS | 8.1.13 | Aug 10, 2023 | May 15, 2024 | 724 days past EOL | EOL |
| 9.0 | 9.0.5 | Sep 14, 2023 | Dec 15, 2023 | 876 days past EOL | EOL |
| 9.1 | 9.1.5 | Oct 13, 2023 | Jan 15, 2024 | 845 days past EOL | EOL |
| 9.2 | 9.2.6 | Nov 6, 2023 | Feb 15, 2024 | 814 days past EOL | EOL |
| 9.3 | 9.3.3 | Dec 5, 2023 | Mar 15, 2024 | 785 days past EOL | EOL |
| 9.4 | 9.4.5 | Jan 8, 2024 | Apr 15, 2024 | 754 days past EOL | EOL |
| 9.5 | 9.5.14 | Feb 2, 2024 | Nov 15, 2024 | 540 days past EOL | EOL |
| 9.6 | 9.6.3 | Mar 1, 2024 | Jun 15, 2024 | 693 days past EOL | EOL |
| 9.7 | 9.7.6 | Apr 3, 2024 | Jul 15, 2024 | 663 days past EOL | EOL |
| 9.8 | 9.8.3 | May 3, 2024 | Aug 15, 2024 | 632 days past EOL | EOL |
| 9.9 | 9.9.3 | May 31, 2024 | Sep 15, 2024 | 601 days past EOL | EOL |
| 9.10 | 9.10.3 | Jun 28, 2024 | Oct 15, 2024 | 571 days past EOL | EOL |
| 9.11 LTS | 9.11.18 | Aug 2, 2024 | May 15, 2025 | 359 days past EOL | EOL |
| 10.0 | 10.0.4 | Sep 16, 2024 | Dec 15, 2024 | 510 days past EOL | EOL |
| 10.1 | 10.1.7 | Oct 16, 2024 | Jan 15, 2025 | 479 days past EOL | EOL |
| 10.2 | 10.2.3 | Nov 15, 2024 | Feb 15, 2025 | 448 days past EOL | EOL |
| 10.3 | 10.3.4 | Dec 16, 2024 | Mar 15, 2025 | 420 days past EOL | EOL |
| 10.4 | 10.4.5 | Jan 16, 2025 | Apr 15, 2025 | 389 days past EOL | EOL |
| 10.5 LTS | 10.5.14 | Feb 16, 2025 | Nov 15, 2025 | 175 days past EOL | EOL |
| 10.6 | 10.6.6 | Mar 16, 2025 | Jun 15, 2025 | 328 days past EOL | EOL |
| 10.7 | 10.7.4 | Apr 16, 2025 | Jul 15, 2025 | 298 days past EOL | EOL |
| 10.8 | 10.8.4 | May 16, 2025 | Aug 15, 2025 | 267 days past EOL | EOL |
| 10.9 | 10.9.5 | Jun 16, 2025 | Sep 15, 2025 | 236 days past EOL | EOL |
| 10.10 | 10.10.3 | Jul 16, 2025 | Oct 15, 2025 | 206 days past EOL | EOL |
| 10.11 | 10.11.15 | Aug 15, 2025 | Aug 15, 2026 | 98 days remaining | Warning |
| 10.12 | 10.12.4 | Sep 16, 2025 | Dec 15, 2025 | 145 days past EOL | EOL |
| 11.0 | 11.0.7 | Oct 16, 2025 | Jan 15, 2026 | 114 days past EOL | EOL |
| 11.1 | 11.1.3 | Nov 14, 2025 | Feb 15, 2026 | 83 days past EOL | EOL |
| 11.2 | 11.2.4 | Dec 16, 2025 | Mar 15, 2026 | 55 days past EOL | EOL |
| 11.3 | 11.3.3 | Jan 16, 2026 | Apr 15, 2026 | 24 days past EOL | EOL |
| 11.4 | 11.4.5 | Feb 16, 2026 | May 15, 2026 | 6 days remaining | Warning |
| 11.5 | 11.5.4 | Mar 16, 2026 | Jun 15, 2026 | 37 days remaining | Warning |
| 11.6 | 11.6.1 | Apr 16, 2026 | Jul 15, 2026 | 67 days remaining | Warning |
When a Mattermost version reaches end of life, the maintainers stop issuing security patches. Vulnerabilities discovered after this date are publicly disclosed on the National Vulnerability Database, exploit code appears on GitHub, and your systems remain permanently exposed.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the accumulation of unpatched vulnerabilities in EOL software. With a zero-day, nobody knows about the vulnerability. With EOL software, the vulnerability is public — listed, rated, and often weaponized — but no patch will ever exist. This is the most dangerous gap in enterprise security posture.
Organizations running EOL Mattermost should treat it as a vulnerability class in their risk register, apply compensating controls (network segmentation, enhanced monitoring, access restriction), and prioritize migration to a supported version.
Upload requirements.txt, package.json, or Gemfile — full EOL report instantly.
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