CVE-2026-31832

MEDIUM

Umbraco 14.0.0-16.5.0/17.0.0-17.2.1 - Privilege Escalation

Title source: llm
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 5.4
EPSS 0.0018
EPSS Percentile 7.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-639
Status published
Products (4)
nuget/Umbraco.Cms 14.0.0 - 16.5.1NuGet
umbraco/Umbraco-CMS >= 14.0.0, < 16.5.1
umbraco/Umbraco-CMS >= 17.0.0, < 17.2.0
umbraco/umbraco_cms 14.0.0 - 16.5.1
Published Mar 10, 2026
Tracked Since Mar 11, 2026