From their article:
For Tiki specifically, the article goes on to say:
Thank you to our helpful, active community of developers and users for helping Tiki make the list!
The Tiki Community has released updates to all current versions of Tiki Wiki CMS Groupware. This update addresses a critical vulnerability found in third-party code that is included with Tiki. The update also includes many fixes and updates.
We highly encourage all Tiki administrators to update their sites to the latest Tiki versions: Tiki 15.2, Tiki 14.4, and Tiki 12.9 LTS.
Visit https://tiki.org/Download to update the latest version.
The Tiki community is pleased to announce Tiki 15.1, the latest stable LTS Tiki version featuring numerous fixes.
To download the current stable Tiki, see https://tiki.org/Download
Version updates have been released for previous Tiki versions too, including Tiki 12.8 and Tiki 14.3. These versions include critical security fixes (*) so Tiki users are recommended to upgrade to the latest version as soon as possible.
The Tiki community is pleased to announce the release of Tiki15, the latest LTS (Long Term Support) version of Tiki Wiki CMS Groupware.
Tiki15 brings numerous new features, enhancements and bug fixes and completes the transition to the Bootstrap framework.
For more information about Tiki 15, see https://doc.tiki.org/Tiki15
To download Tiki15, see https://tiki.org/Download
Tiki's next LTS (Long Term Service) generation is almost final and is coming out with an excellent report of almost none regression nor problem regarding the dozens of new features and options. With 194 commits between alpha and beta the team successfully nailed all the blockers and improved several key features within Tiki.
The Tiki Community wishes to announce that the Alpha version of Tiki 15 is now available. This is an important milestone towards the release of Tiki 15 LTS (which is much better than previous LTS version Tiki 12) and we are looking for as much as possible support from the community to help in testing and reporting which is a critical part of the process. Thanks to our coders' hard work Tiki15 Alpha is already close to a stable release but we need Tiki users to test and upgrade real website data (on a duplicate test site and database of course, at this point) so we can can have as good a release as possible.
Please grab your copy at : https://sourceforge.net/projects/tikiwiki/files/Tiki_15.x_Situla/15.0alpha/ or from the 15.x via SVN if that's what you've been using.
Report at : https://dev.tiki.org/Make+a+wish
Follow the process at : https://dev.tiki.org/Tiki15
The Tiki Community wishes to announce the release of Tiki version 12.6 LTS, a minor upgrade from the version 12.5 LTS released recently. This version fixes a problem where Tiki Profiles were not installing, and includes a couple of other refinements. The Tiki Profiles installation issue did not affect other versions.
Downloads are available at: http://tiki.org/download