Umbraco is an open-source content management system (CMS) platform for publishing content on the World Wide Web and intranets. It is written in C# and deployed on Microsoft based infrastructure. Since version 4.5, the whole system has been available under an MIT License.

Release Released Support Security Latest
12 11 months ago
(27 Jun 2023)
Ended 2 months and 1 week ago
(29 Mar 2024)
Ends in 2 weeks and 6 days
(29 Jun 2024)
12.3.1
(07 Nov 2023)
11 1 year and 6 months ago
(29 Nov 2022)
Ended 9 months ago
(29 Aug 2023)
Ended 6 months ago
(29 Nov 2023)
11.5.0
(05 Sep 2023)
10 (LTS) 2 years ago
(10 Jun 2022)
Ends tomorrow
(10 Jun 2024)
Ends in 1 year
(10 Jun 2025)
10.7.0
(05 Sep 2023)
9 2 years and 8 months ago
(26 Sep 2021)
Ended 1 year and 8 months ago
(16 Sep 2022)
Ended 1 year and 5 months ago
(16 Dec 2022)
9.5.4
(05 Sep 2022)
8 (LTS) 5 years ago
(21 Feb 2019)
Ended 3 months and 2 weeks ago
(24 Feb 2024)
Ends in 8 months
(24 Feb 2025)
8.18.9
(28 Aug 2023)
7 (LTS) 10 years ago
(21 Nov 2013)
Ended 2 years and 11 months ago
(01 Jul 2021)
Ended 8 months ago
(30 Sep 2023)
7.15.11
(05 Sep 2023)
6 11 years ago
(27 Mar 2013)
Ended 6 years ago
(01 May 2018)
Ended 6 years ago
(01 May 2018)
6.2.6
(03 Mar 2016)

Umbraco follows Semantic Versioning. Starting with Umbraco 9 (2021-09-28), a new major version is released two times per year, a new minor version is released every 6 weeks, and patch versions are published as soon as possible.

Starting from January 2022, there are two phases of support for major releases: the “Support” phase and the “Security” phase. The “Support” phase includes bugs, regressions and security fixes for 9 months from the first release, extended to 24 months for LTS major releases. It is followed by the “Security” phase, which includes only security fixes for 3 months, extended to 12 months for LTS major releases. At the end of the Security phase, major releases are considered End Of Life (EOL).

A full list of releases with their release notes can be found on Umbraco All Releases page.

More information is available on the Umbraco CMS website.

You should be running one of the supported release numbers listed above in the rightmost column.


You can submit an improvement to this page on GitHub :octocat: . This page has a corresponding Talk Page.

A JSON version of this page is available at /api/umbraco.json. See the API Documentation for more information. You can subscribe to the iCalendar feed at /calendar/umbraco.ics.