GHSA-4g8m-5mj5-c8xg

Umbraco Makes User Enumeration Feasible Based on Timing of Login Response

Source: GitHub Advisory Database (reviewed) Moderate CVE-2025-46736

Packages

Ecosystem	Package	Affected	Fixed in
NuGet	Umbraco.Cms	>= 11.0.0-rc1, < 13.8.1	13.8.1
NuGet	Umbraco.Cms	< 10.8.10	10.8.10

Details

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

### Impact Based on an analysis of the timing of post login API responses, it's possible to determine whether an account exists. ### Patches Patched in 10.8.10 and 13.8.1. ### Workarounds None available.

References

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

https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-4g8m-5mj5-c8xg web
https://nvd.nist.gov/vuln/detail/CVE-2025-46736 advisory
https://github.com/umbraco/Umbraco-CMS/commit/14fbd20665b453cbf094ccf4575b79a9fba07e03 web
https://github.com/umbraco/Umbraco-CMS/commit/34709be6cce9752dfa767dffbf551305f48839bc web
https://github.com/umbraco/Umbraco-CMS package