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EUVD-2026-215262

fkie_cve-2025-24011

Umbraco is a free and open source .NET content management system. Starting in version 14.0.0 and prior to versions 14.3.2 and 15.1.2, it's possible to determine whether an account exists based on an analysis of response codes and timing of Umbraco management API responses. Versions 14.3.2 and 15.1.2 contain a patch. No known workarounds are available.

GHSA-hmg4-wwm5-p999 — Umbraco Allows User Enumeration Feasible Based On Management API Timing and Response Codes

Affected: NuGet: Umbraco.Cms

### 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.