Umbraco CMS vulnerable to stored Cross-site Scripting in the "dictionary name" on Dictionary section

Impact

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.

Patches

Will be patched in 14.3.1 and 15.0.0.

Workarounds

Ensure that access to the Dictionary section is only granted to trusted users.