Umbraco CMS End of Life (EOL) Dates and End of Support (EOS) Dates
9 Umbraco CMS versions have reached End of Life (EOL) and End of Support (EOS), including Umbraco CMS 15 (EOL date: Nov 14, 2025) — no longer receiving security updates or patches. Umbraco CMS 16 reaches its End of Support date on Jun 12, 2026 — plan your upgrade path now. Umbraco CMS 17.4.2 LTS is the current supported release, with support through Nov 27, 2028 — 2 versions in active support. Also see Apache Subversion EOSL dates for related end-of-life information.
Currently Supported Umbraco CMS Releases - Active EOS/EOSL Support (2)
Umbraco CMS Releases Nearing End of Life - Support Ending Soon (1)
| Release | Released | Security | Support | Latest | LTS |
|---|---|---|---|---|---|
| 16 | (11 months ago) | (in 2 weeks and 5 days) | (2 months ago) | 16.5.1 (2 months ago) | - |
Umbraco CMS End of Life (EOL) Releases - No Longer Supported (9)
| Release | Released | Security | Support | Latest | LTS |
|---|---|---|---|---|---|
| 15 | (1 year and 6 months ago) | (6 months ago) | (9 months ago) | 15.4.4 (9 months ago) | - |
| 14 | (1 year and 11 months ago) | (11 months ago) | (1 year and 2 months ago) | 14.3.4 (1 year and 1 month ago) | - |
| 12 | (2 years and 10 months ago) | (1 year and 10 months ago) | (2 years and 1 month ago) | 12.3.10 (2 years ago) | - |
| 11 | (3 years and 5 months ago) | (2 years and 5 months ago) | (2 years and 8 months ago) | 11.5.0 (2 years and 8 months ago) | - |
| 10 (LTS) | (3 years and 11 months ago) | (11 months ago) | (1 year and 11 months ago) | 10.8.11 (11 months ago) | LTS |
| 9 | (4 years and 7 months ago) | (3 years and 5 months ago) | (3 years and 8 months ago) | 9.5.4 (3 years and 8 months ago) | - |
| 8 (LTS) | (7 years and 2 months ago) | (1 year and 3 months ago) | (2 years and 3 months ago) | 8.18.15 (1 year and 7 months ago) | LTS |
| 7 (LTS) | (12 years and 6 months ago) | (2 years and 7 months ago) | (4 years and 9 months ago) | 7.15.11 (2 years and 8 months ago) | LTS |
| 6 | (13 years and 1 month ago) | (8 years ago) | (8 years ago) | 6.2.6 (10 years and 2 months ago) | - |
Umbraco CMS End of Life & Support Summary
Which Umbraco CMS Versions Are Currently Supported?
Umbraco CMS currently has 2 supported releases. Umbraco CMS 17.4.2 LTS is the latest, with active support through Nov 27, 2028. Umbraco CMS 13 (LTS) is also supported until Dec 14, 2026. Note that Umbraco CMS 16 support ends on Jun 12, 2026 — plan your upgrade before then. Also see Rancher EOSL dates for related end-of-life information.
Umbraco CMS Versions Nearing End of Life
1 Umbraco CMS release is reaching End of Life (EOL) within 6 months. Umbraco CMS 16 support ends on Jun 12, 2026. Upgrade to Umbraco CMS 17.4.2 LTS to stay on a supported release. Also see Mattermost end of support for related end-of-life information.
Umbraco CMS End of Life (EOL) Version History
9 Umbraco CMS releases have reached End of Life (EOL) and End of Support (EOS) — no longer receiving updates or patches. Umbraco CMS 15 reached EOL on Nov 14, 2025. Umbraco CMS 17.4.2 LTS is the recommended upgrade for users still on End of Life versions.