Is CVE-2026-31832 actively exploited?

No active exploitation of CVE-2026-31832 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-31832 be exploited remotely?

Yes. CVE-2026-31832 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-31832?

CVE-2026-31832 has a CVSS score of 5.4 (MEDIUM).

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MEDIUM

CVE-2026-31832

CWE-639Published: March 10, 2026· Updated: Mar 11, 2026

5.4

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:10.2th

Official 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.

NVD Source

Technical Analysis

CVE-2026-31832 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.