Umbraco is a free and open source .NET content management system. Prior to versions 10.8.10 and 13.8.1, based on an analysis of the timing of post login API responses, it's possible to determine whether an account exists. The issue is patched in versions 10.8.10 and 13.8.1. No known workarounds are available.
Advisories
Source ID Title
EUVD EUVD EUVD-2025-13623 Umbraco is a free and open source .NET content management system. Prior to versions 10.8.10 and 13.8.1, based on an analysis of the timing of post login API responses, it's possible to determine whether an account exists. The issue is patched in versions 10.8.10 and 13.8.1. No known workarounds are available.
Github GHSA Github GHSA GHSA-4g8m-5mj5-c8xg Umbraco Makes User Enumeration Feasible Based on Timing of Login Response
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 03 Sep 2025 18:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:umbraco:umbraco_cms:*:*:*:*:*:*:*:*

Sun, 13 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00039}

epss

{'score': 0.00041}


Tue, 06 May 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 06 May 2025 17:15:00 +0000

Type Values Removed Values Added
Description Umbraco is a free and open source .NET content management system. Prior to versions 10.8.10 and 13.8.1, based on an analysis of the timing of post login API responses, it's possible to determine whether an account exists. The issue is patched in versions 10.8.10 and 13.8.1. No known workarounds are available.
Title Umbraco Makes User Enumeration Feasible Based on Timing of Login Response
Weaknesses CWE-204
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-05-06T19:41:51.341Z

Reserved: 2025-04-28T20:56:09.085Z

Link: CVE-2025-46736

cve-icon Vulnrichment

Updated: 2025-05-06T19:41:45.935Z

cve-icon NVD

Status : Analyzed

Published: 2025-05-06T17:16:12.717

Modified: 2025-09-03T17:59:16.073

Link: CVE-2025-46736

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-06-23T19:31:58Z