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CVE-2025-27601

Umbraco Allows Improper API Access Control to Low-Privilege Users to Data Type Functionality

Published: Mar 11, 2025Updated: Sep 22, 2025 Sources: CVE List NVD GHSACWE-285
NVD MITRE
4.3CVSSMEDIUM
EPSS Score
0.3%
Top 78.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-285CWE-863

Affected Products

umbraco cmsumbraco
On-premCMS Plugin
Web & CMS Plugins / cms-core
Umbraco.Cms.Api.ManagementNuGetOSS Libraries
Umbraco-CMSumbraco
On-premCMS Plugin
Web & CMS Plugins / cms-core
umbracocommercialDKWeb & CMS Pluginsaka umbraco cms, umbraco forms, umbraco-cms
nugetpackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://github.com/umbraco/Umbraco-CMS/commit/d9fb6df16e9adf8656181cac8497fc5ba23321cd
github.com
https://github.com/umbraco/Umbraco-CMS/commit/ebb6a580dc1da2c772a99838dc7b4660bf77eb9c
github.com
https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-6ffg-mjg7-585x
github.com
and 2 more references View all →

Timeline

Published
Mar 11, 2025
Last Updated
Sep 22, 2025

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