CVE-2026-31832 Details
Description
Umbraco is an ASP.NET CMS. From 14.0.0 to before 16.5.1 and 17.2.2, A broken object-level authorization vulnerability exists in a backoffice API endpoint that allows authenticated users to assign domain-related data to content nodes without proper authorization checks. The issue is caused by insufficient authorization enforcement on the affected API endpoint, whereby via an API call, domains can be set on content nodes that the editor does not have permission to access (either via user group privileges or start nodes). This vulnerability is fixed in 16.5.1 and 17.2.2.
A broken object-level authorization vulnerability has been identified in Umbraco CMS versions 14.0.0 prior to 16.5.1 and 17.2.2. This vulnerability exists in a backoffice API endpoint, allowing authenticated users to assign domain-related data to content nodes without proper authorization checks. The issue arises from insufficient authorization enforcement, enabling editors to set domains on content nodes they do not have permission to access, either through user group privileges or start nodes.
Users can upgrade to Umbraco CMS versions 16.5.1 or 17.2.2 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 11, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-fpvf-fvp5-996r | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| umbraco umbraco cms | >= 14.0.0, < 16.5.1 >= 17.0.0, < 17.2.2 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 18, 2026 | Initial Analysis | [email protected] |
| Mar 10, 2026 | New CVE Received | [email protected] |