CVE-2025-24011: Umbraco Allows User Enumeration Feasible Based On Management API Timing and Response Codes
(updated )
Based on an analysis of response codes and timing of Umbraco 14+ management API responses, it’s possible to determine whether an account exists.
References
- github.com/advisories/GHSA-hmg4-wwm5-p999
- github.com/umbraco/Umbraco-CMS
- github.com/umbraco/Umbraco-CMS/commit/559c6c9f312df1d6eb1bde82c4b81c0896da6382
- github.com/umbraco/Umbraco-CMS/commit/839b6816f2ae3e5f54459a0f09dad6b17e2d1e07
- github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-hmg4-wwm5-p999
- nvd.nist.gov/vuln/detail/CVE-2025-24011
Code Behaviors & Features
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