CVE-2024-34071: Umbraco CMS

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Umbraco is an ASP.NET CMS used by more than 730.000 websites. Umbraco has an endpoint that is vulnerable to open redirects. The endpoint is protected so it requires the user to be signed into backoffice before the vulnerable is exposed. This vulnerability has been patched in version(s) 8.18.14, 10.8.6, 12.3.10 and 13.3.1.

Affected products

• Umbraco Umbraco CMS: from 8.18.5, before 8.18.14 (fixed in 8.18.14); from 10.5.0, before 10.8.6 (fixed in 10.8.6); from 12.0.0, before 12.3.10 (fixed in 12.3.10); from 13.0.0, before 13.3.1 (fixed in 13.3.1)

Published 2024-05-21. Last modified 2026-06-17.