What is the CVSS score of CVE-2025-27601?

CVE-2025-27601 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N. EPSS exploitation probability: 0.1%.

Which versions of Umbraco are affected by CVE-2025-27601?

Organizations using Umbraco should be aware of moderate risk from CVE-2025-27601 rated CVSS 4.3. Exploitation could compromise the security of affected deployments.. A patch is available.

How to fix or mitigate CVE-2025-27601?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.

Umbraco CVE-2025-27601

MEDIUM

Improper Authorization (CWE-285)

2025-03-11 security-advisories@github.com

GHSA-6ffg-mjg7-585x

RCE

4.3

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

4.3 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 19:52 vuln.today

Patch released

Sep 22, 2025 - 13:58 nvd

Patch available

CVE Published

Mar 11, 2025 - 16:15 nvd

MEDIUM 4.3

DescriptionGitHub Advisory

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.

AnalysisAI

Umbraco is a free and open source .NET content management system. [CVSS 4.3 MEDIUM]

Technical ContextAI

Classified as CWE-285 (Improper Authorization). Affects s API management package. 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.