Mattermost End of Life (EOL) Dates & Support Timeline
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 | 1620 days past EOL | EOL |
| 6.1 | 6.1.3 | Nov 11, 2021 | Feb 15, 2022 | 1589 days past EOL | EOL |
| 6.2 | 6.2.5 | Dec 13, 2021 | Mar 15, 2022 | 1561 days past EOL | EOL |
| 6.3 LTS | 6.3.10 | Jan 13, 2022 | Oct 15, 2022 | 1347 days past EOL | EOL |
| 6.4 | 6.4.3 | Feb 15, 2022 | May 15, 2022 | 1500 days past EOL | EOL |
| 6.5 | 6.5.2 | Mar 11, 2022 | Jun 15, 2022 | 1469 days past EOL | EOL |
| 6.6 | 6.6.2 | Apr 7, 2022 | Jul 15, 2022 | 1439 days past EOL | EOL |
| 6.7 | 6.7.2 | May 11, 2022 | Aug 15, 2022 | 1408 days past EOL | EOL |
| 7.0 | 7.0.2 | Jun 13, 2022 | Sep 15, 2022 | 1377 days past EOL | EOL |
| 7.1 LTS | 7.1.9 | Jul 13, 2022 | May 15, 2023 | 1135 days past EOL | EOL |
| 7.2 | 7.2.1 | Aug 11, 2022 | Nov 15, 2022 | 1316 days past EOL | EOL |
| 7.3 | 7.3.1 | Sep 14, 2022 | Dec 15, 2022 | 1286 days past EOL | EOL |
| 7.4 | 7.4.1 | Oct 12, 2022 | Jan 15, 2023 | 1255 days past EOL | EOL |
| 7.5 LTS | 7.5.2 | Nov 9, 2022 | Feb 15, 2023 | 1224 days past EOL | EOL |
| 7.7 | 7.7.4 | Jan 13, 2023 | Apr 15, 2023 | 1165 days past EOL | EOL |
| 7.8 LTS | 7.8.15 | Feb 14, 2023 | Nov 15, 2023 | 951 days past EOL | EOL |
| 7.9 | 7.9.6 | Mar 14, 2023 | Jul 15, 2023 | 1074 days past EOL | EOL |
| 7.10 | 7.10.5 | Apr 12, 2023 | Aug 15, 2023 | 1043 days past EOL | EOL |
| 8.0 | 8.0.4 | Jul 9, 2023 | Oct 15, 2023 | 982 days past EOL | EOL |
| 8.1 LTS | 8.1.13 | Aug 10, 2023 | May 15, 2024 | 769 days past EOL | EOL |
| 9.0 | 9.0.5 | Sep 14, 2023 | Dec 15, 2023 | 921 days past EOL | EOL |
| 9.1 | 9.1.5 | Oct 13, 2023 | Jan 15, 2024 | 890 days past EOL | EOL |
| 9.2 | 9.2.6 | Nov 6, 2023 | Feb 15, 2024 | 859 days past EOL | EOL |
| 9.3 | 9.3.3 | Dec 5, 2023 | Mar 15, 2024 | 830 days past EOL | EOL |
| 9.4 | 9.4.5 | Jan 8, 2024 | Apr 15, 2024 | 799 days past EOL | EOL |
| 9.5 | 9.5.14 | Feb 2, 2024 | Nov 15, 2024 | 585 days past EOL | EOL |
| 9.6 | 9.6.3 | Mar 1, 2024 | Jun 15, 2024 | 738 days past EOL | EOL |
| 9.7 | 9.7.6 | Apr 3, 2024 | Jul 15, 2024 | 708 days past EOL | EOL |
| 9.8 | 9.8.3 | May 3, 2024 | Aug 15, 2024 | 677 days past EOL | EOL |
| 9.9 | 9.9.3 | May 31, 2024 | Sep 15, 2024 | 646 days past EOL | EOL |
| 9.10 | 9.10.3 | Jun 28, 2024 | Oct 15, 2024 | 616 days past EOL | EOL |
| 9.11 LTS | 9.11.18 | Aug 2, 2024 | May 15, 2025 | 404 days past EOL | EOL |
| 10.0 | 10.0.4 | Sep 16, 2024 | Dec 15, 2024 | 555 days past EOL | EOL |
| 10.1 | 10.1.7 | Oct 16, 2024 | Jan 15, 2025 | 524 days past EOL | EOL |
| 10.2 | 10.2.3 | Nov 15, 2024 | Feb 15, 2025 | 493 days past EOL | EOL |
| 10.3 | 10.3.4 | Dec 16, 2024 | Mar 15, 2025 | 465 days past EOL | EOL |
| 10.4 | 10.4.5 | Jan 16, 2025 | Apr 15, 2025 | 434 days past EOL | EOL |
| 10.5 LTS | 10.5.14 | Feb 16, 2025 | Nov 15, 2025 | 220 days past EOL | EOL |
| 10.6 | 10.6.6 | Mar 16, 2025 | Jun 15, 2025 | 373 days past EOL | EOL |
| 10.7 | 10.7.4 | Apr 16, 2025 | Jul 15, 2025 | 343 days past EOL | EOL |
| 10.8 | 10.8.4 | May 16, 2025 | Aug 15, 2025 | 312 days past EOL | EOL |
| 10.9 | 10.9.5 | Jun 16, 2025 | Sep 15, 2025 | 281 days past EOL | EOL |
| 10.10 | 10.10.3 | Jul 16, 2025 | Oct 15, 2025 | 251 days past EOL | EOL |
| 10.11 | 10.11.20 | Aug 15, 2025 | Aug 15, 2026 | 53 days remaining | Warning |
| 10.12 | 10.12.4 | Sep 16, 2025 | Dec 15, 2025 | 190 days past EOL | EOL |
| 11.0 | 11.0.7 | Oct 16, 2025 | Jan 15, 2026 | 159 days past EOL | EOL |
| 11.1 | 11.1.3 | Nov 14, 2025 | Feb 15, 2026 | 128 days past EOL | EOL |
| 11.2 | 11.2.4 | Dec 16, 2025 | Mar 15, 2026 | 100 days past EOL | EOL |
| 11.3 | 11.3.3 | Jan 16, 2026 | Apr 15, 2026 | 69 days past EOL | EOL |
| 11.4 | 11.4.5 | Feb 16, 2026 | May 15, 2026 | 39 days past EOL | EOL |
| 11.5 | 11.5.7 | Mar 16, 2026 | Jun 15, 2026 | 8 days past EOL | EOL |
| 11.6 | 11.6.5 | Apr 16, 2026 | Jul 15, 2026 | 22 days remaining | Warning |
| 11.7 | 11.7.5 | May 15, 2026 | May 15, 2027 | 326 days remaining | Active |
| 11.8 | 11.8.1 | Jun 16, 2026 | Sep 15, 2026 | 84 days remaining | Warning |
What does Mattermost end of life mean for your organization?
When a version of Mattermost 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.
Extended Support Options
If you cannot migrate immediately, extended support vendors provide continued security patches for EOL Mattermost versions. This is a bridge, not a permanent solution — plan your migration in parallel.
We work with vetted extended support vendors. Tell us what you need and we'll connect you with the right provider.
Contact Us →