CVE-2025-54425

Umbraco is an ASP.NET CMS. In versions 13.0.0 through 13.9.2, 15.0.0 through 15.4.1 and 16.0.0 through 16.1.0, the content delivery API can be restricted from public access where an API key must be provided in a header to authorize the request. It's also possible to configure output caching, such that the delivery API outputs will be cached for a period of time, improving performance. There's an issue when these two things are used together, where caching doesn't vary by the header that contains the API key. As such, it's possible for a user without a valid API key to retrieve a response for a given path and query if it has recently been requested and cached by request with a valid key. This is fixed in versions 13.9.3, 15.4.4 and 16.1.1.

The following products are affected by CVE-2025-54425 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-54425.

URL	Resource
https://docs.umbraco.com/umbraco-cms/reference/content-delivery-api
https://github.com/umbraco/Umbraco-CMS/commit/7e82c258eebaa595eadc9b000461e27d02bc030e
https://github.com/umbraco/Umbraco-CMS/commit/9f37db18d11c8ba4e3ecdeb35291af30ebee7cd0
https://github.com/umbraco/Umbraco-CMS/commit/da43086017e1e318f6b5373391d78421efebce3a
https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-75vq-qvhr-7ffr