CVE-2025-54425
Description
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.
How to fix
- umbraco umbraco_cms13.9.3, 15.4.4, 16.1.1 or later
- Umbraco.Cms.Api.Delivery13.9.3, 15.4.4, 16.1.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| umbraco umbraco_cms | 13.0.0 ≤ v < 13.9.3, 15.0.0 ≤ v < 15.4.4, 16.0.0 ≤ v < 16.1.1 | 13.9.3, 15.4.4, 16.1.1 |
| Umbraco.Cms.Api.DeliveryNuGet | 13.0.0 ≤ v < 13.9.3, 15.0.0 ≤ v < 15.4.4, 16.0.0 ≤ v < 16.1.1 | 13.9.3, 15.4.4, 16.1.1 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.