A vulnerability was found in Umbraco CMS up to 10.7.7/12.3.6/13.5.2/14.3.1/15.1.1. It has been classified as problematic. Affected is an unknown function of the file /Umbraco/preview/frame?id{} of the component Dashboard. The manipulation of the argument culture leads to cross site scripting. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 10.8.8, 13.5.3, 14.3.2 and 15.1.2 is able to address this issue. It is recommended to upgrade the affected component.