CVE-2025-46736— Umbraco Makes User Enumeration Feasible Based on Timing of Login Response
Quick assessment
Affected
umbraco Umbraco-CMS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Umbraco是丹麦Umbraco公司的一套C#编写的开源的内容管理系统（CMS）。 Umbraco 10.8.10之前版本和13.8.1之前版本存在安全漏洞，该漏洞源于登录API响应时间分析可确定账户存在性。
Possible ATT&CK Techniques 1 AI
T1595 · Active Scanning
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I. Basic Information for CVE-2025-46736
Vulnerability Information
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Vulnerability Title
Umbraco Makes User Enumeration Feasible Based on Timing of Login Response
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
响应差异性信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Umbraco 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Umbraco是丹麦Umbraco公司的一套C#编写的开源的内容管理系统（CMS）。 Umbraco 10.8.10之前版本和13.8.1之前版本存在安全漏洞，该漏洞源于登录API响应时间分析可确定账户存在性。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| umbraco | Umbraco-CMS | >= 11.0.0-rc1, < 13.8.1 | - |
|
II. Public POCs for CVE-2025-46736
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same product: Umbraco-CMS
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CVE-2026-69197
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Umbraco Affected by Vertical Privilege Escalation via Missin -
CVE-2026-31833
Umbraco has Stored XSS in UFM Rendering Pipeline via Permiss
Same vendor: umbraco
-
CVE-2026-69197
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CVE-2026-46609
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CVE-2026-46616
Umbraco.Cms: Open Redirect Vulnerability in Surface Controll -
CVE-2026-31834
Umbraco Affected by Vertical Privilege Escalation via Missin -
CVE-2026-31833
Umbraco has Stored XSS in UFM Rendering Pipeline via Permiss
Same weakness: CWE-204
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V. Comments for CVE-2025-46736
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