Missing Authorization Affecting umbraco.cms.api.delivery package, versions [13.0.0,13.9.3)[14.0.0,15.4.4)[16.0.0, 16.1.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published30 Jul 2025
- disclosed29 Jul 2025
- creditUnknown
Introduced: 29 Jul 2025
CVE-2025-54425 (opens in a new tab)How to fix?
Upgrade Umbraco.Cms.Api.Delivery to version 13.9.3, 15.4.4, 16.1.1 or higher.
Overview
Umbraco.Cms.Api.Delivery is a presentation layer for the Umbraco CMS Delivery API.
Affected versions of this package are vulnerable to Missing Authorization in IOutputCachePolicy.CacheRequestAsync. An attacker can access sensitive information by sending requests without a valid API key and receiving cached responses that were originally generated for authorized users.
Workaround
This vulnerability can be mitigated by removing or reducing the output caching duration or by restricting access to the API through IP filtering.