Observable Response Discrepancy Affecting umbraco.cms.web.backoffice package, versions [,10.8.10)[11.0.0-rc1,13.8.1)
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Test your applications- Snyk IDSNYK-DOTNET-UMBRACOCMSWEBBACKOFFICE-10074185
- published8 May 2025
- disclosed6 May 2025
- creditArne Hildrum, Erik Hansen-Tangen Breien, krieriks
Introduced: 6 May 2025
NewCVE-2025-46736 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade Umbraco.Cms.Web.BackOffice to version 10.8.10, 13.8.1 or higher.
Overview
Affected versions of this package are vulnerable to Observable Response Discrepancy due to the timing analysis of post-login API responses. An attacker can determine if a specific user account exists by observing the response times.