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EUVD-2026-196781

fkie_cve-2024-47819

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.

GHSA-c5g6-6xf7-qxp3 — Umbraco CMS vulnerable to stored Cross-site Scripting in the "dictionary name" on Dictionary section

Affected: NuGet: Umbraco.Cms.StaticAssets, npm: @umbraco-cms/backoffice

### 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.