Authorization Vulnerability in Umbraco CMS Versions 14.0.0 to 16.5.1 and 17.2.2
CVE-2026-31832

5.4MEDIUM

Key Information:

Vendor

Umbraco

Status
Umbraco-cms
Vendor
CVE Published:
10 March 2026

What is CVE-2026-31832?

A broken object-level authorization vulnerability exists in an API endpoint of Umbraco CMS, allowing authenticated users to improperly assign domain-related data to content nodes without sufficient authorization checks. This situation occurs due to inadequate enforcement of authorization policies, enabling users to make API calls that set domains on content nodes beyond their permitted access scopes. Affected versions range from 14.0.0 up to 16.5.1 and 17.2.2. Remediation is achieved in subsequent releases.

Affected Version(s)

Umbraco-CMS >= 14.0.0, < 16.5.1 < 14.0.0, 16.5.1

Umbraco-CMS >= 17.0.0, < 17.2.0 < 17.0.0, 17.2.0

References

https://github.com/umbraco/Umbraco-CMS/security/advisorie...
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CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.