CVE-2026-31832
Last modified
CVE-2026-31832 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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. EPSS estimates a 0.18% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Umbraco | Umbraco Cms | >= 14.0.0, < 16.5.1 |
| Umbraco | Umbraco Cms | >= 17.0.0, < 17.2.2 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-31832?
How severe is CVE-2026-31832?
How do I fix CVE-2026-31832?
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-31827Alienbin is an anonymous code and text sharing web service. …7.1
- CVE-2026-31828Parse Server is an open source backend that can be deployed …8.8
- CVE-2026-31829Flowise is a drag & drop user interface to build a customize…8.8
- CVE-2026-3183Zohocorp ManageEngine ADSelfService Plus versions before 652…7.1
- CVE-2026-31830sigstore-ruby is a pure Ruby implementation of the sigstore …7.5
- CVE-2026-31831Tautulli is a Python based monitoring and tracking tool for …7.5
- CVE-2026-31833Umbraco is an ASP.NET CMS. From 16.2.0 to before 16.5.1 and …6.7
- CVE-2026-31834Umbraco is an ASP.NET CMS. From 15.3.1 to before 16.5.1 and …7.2
- CVE-2026-31835Vaultwarden is a Bitwarden-compatible server written in Rust…5.4
- CVE-2026-31836Checkmate is an open-source, self-hosted tool designed to tr…8.1
- CVE-2026-31837Istio is an open platform to connect, manage, and secure mic…7.5
- CVE-2026-31838Istio is an open platform to connect, manage, and secure mic…5.3
Are you affected by CVE-2026-31832?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST