Dear OpenOlat community
Some weeks ago we released OpenOlat 19.0. The OpenOlat 19.0 release is an iterative evolution of the 18.x release series. It includes also several important security improvements, thus we recommend updating to the newest 19.0.x release as soon as possible.
Note that we also released OpenOlat 18.2.13 yesterday that includes important security updates. If you want to stay on this older release series make sure that you update to this version. Other release series than 19.0.x and 18.2.x are not maintained anymore and should not be used anymore.