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CVE-2025-27601— Umbraco Allows Improper API Access Control to Low-Privilege Users to Data Type Functionality

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 15.2.3版本和14.3.3版本之前版本存在安全漏洞，该漏洞源于API访问控制不当，可能导致低权限用户创建和更新数据类型信息。

CVSS 4.3 · Medium EPSS 0.32% · P22

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-27601

Vulnerability Information
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Vulnerability Title
Umbraco Allows Improper API Access Control to Low-Privilege Users to Data Type Functionality
Source: CVE Program / CVE List V5
Vulnerability Description
Umbraco is a free and open source .NET content management system. An improper API access control issue has been identified Umbraco's API management package prior to versions 15.2.3 and 14.3.3, allowing low-privilege, authenticated users to create and update data type information that should be restricted to users with access to the settings section. The issue is patched in versions 15.2.3 and 14.3.3. No known workarounds are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
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 15.2.3版本和14.3.3版本之前版本存在安全漏洞，该漏洞源于API访问控制不当，可能导致低权限用户创建和更新数据类型信息。
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 >= 15.0.0-rc1, < 15.2.3 -

II. Public POCs for CVE-2025-27601

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III. Intelligence Information for CVE-2025-27601

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Patches & Fixes for CVE-2025-27601 (2)

Vendor Advisories for CVE-2025-27601 (1)

IV. Related Vulnerabilities

Same product: Umbraco-CMS
Same vendor: umbraco
Same weakness: CWE-285

V. Comments for CVE-2025-27601

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