VULNERABILITY INTELLIGENCE

CVE-2023-49278

CVSS score5.3 MEDIUM

EPSS probability0.50%

CISA KEVNot currently listed

Published2023-12-12

Last modified2026-06-17

Description

Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.8.1, and 12.3.4, a brute force exploit can be used to collect valid usernames. Versions 8.18.10, 10.8.1, and 12.3.4 contain a patch for this issue.