GHSA-hmg4-wwm5-p999

Umbraco Allows User Enumeration Feasible Based On Management API Timing and Response Codes

Source: GitHub Advisory Database (reviewed) Moderate CVE-2025-24011

Packages

Ecosystem	Package	Affected	Fixed in
NuGet	Umbraco.Cms	>= 14.0.0, < 14.3.2	14.3.2
NuGet	Umbraco.Cms	>= 15.0.0, < 15.1.2	15.1.2

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact Based on an analysis of response codes and timing of Umbraco 14+ management API responses, it's possible to determine whether an account exists. ### Patches Patched in 14.3.2 and 15.1.2. ### Workarounds None available.

References

External links from the advisory. They lead to third-party sites.

https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-hmg4-wwm5-p999 web
https://nvd.nist.gov/vuln/detail/CVE-2025-24011 advisory
https://github.com/umbraco/Umbraco-CMS/commit/559c6c9f312df1d6eb1bde82c4b81c0896da6382 web
https://github.com/umbraco/Umbraco-CMS/commit/839b6816f2ae3e5f54459a0f09dad6b17e2d1e07 web
https://github.com/umbraco/Umbraco-CMS package