CVE-2024-48929: Umbraco CMS

Medium severity, CVSS 4.2. EPSS: 0.3% chance of exploitation in the next 30 days.

Umbraco is a free and open source .NET content management system. In versions on the 13.x branch prior to 13.5.2 and versions on the 10.x branch prior to 10.8.7, during an explicit sign-out, the server session is not fully terminated. Versions 13.5.2 and 10.8.7 contain a patch for the issue.

Affected products

• Umbraco Umbraco CMS: from 10.0, before 10.8.7 (fixed in 10.8.7); from 13.0, before 13.5.2 (fixed in 13.5.2)

Published 2024-10-22. Last modified 2026-06-17.