Umbraco, a free and open source .NET content management system, has a cross-site scripting vulnerability starting in version 14.0.0 and prior to versions 14.3.1 and 15.0.0. This can be leveraged to gain access to higher-privilege endpoints, e.g. if you get a user with admin privileges to run the code, you can potentially elevate all users and grant them admin privileges or access protected content. Versions 14.3.1 and 15.0.0 contain a patch. As a workaround, ensure that access to the Dictionary section is only granted to trusted users.

GitHub, Inc. AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N

GitHub, Inc. CWE-79

GitHub, Inc. https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-c5g6-6xf7-qxp3 [No types assigned]