CVE-2023-48227 Umbraco CMS Backoffice User can bypass "Publish" restriction

What is CVE-2023-48227?

CVE-2023-48227 is a medium-severity missing authorization vulnerability in Umbraco Umbraco Cms, published on 12 Dec 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.7.0, and 12.3.0, Backoffice users with send for approval permission but not publish permission are able to publish in some scenarios. Versions 8.18.10, 10.7.0, and 12.3.0 contains a patch for this issue. No known workarounds are available.

Weakness: CWE-863

Which versions are affected by CVE-2023-48227?

6 open source packages ship an affected version, including Umbraco.CMS. It affects 1 product.

Products include Umbraco Umbraco Cms.

How do I fix CVE-2023-48227?

Upgrade Umbraco.CMS to a fixed version for your release line: 12.3.0, 8.18.10 or 10.8.0.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2023-48227 being exploited?

There is no known exploitation of CVE-2023-48227 in the wild and no public exploit code.

Other vulnerabilities in Umbraco Umbraco Cms

• CVE-2025-67288 Umbraco CMS has an arbitrary file upload vulnerability Critical 10.0
• CVE-2014-10074 File upload in n/a Critical 9.8
• CVE-2012-1301 Server-side request forgery in n/a Critical 9.8
• CVE-2012-10054 Umbraco CMS < 4.7.1 codeEditorSave.asmx RCE Critical 9.3
• CVE-2025-32017 Umbraco has a Management API Vulnerability to Path Traversal With Authenticated Users High 8.8

All Umbraco Umbraco Cms vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-335x-5wcm-8jv2.