CVE-2025-59539: Dnnsoftware DotNetNuke

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to version 10.1.0, when embedding information in the Biography field, even if that field is not rich-text, users could inject javascript code that would run in the context of the website and to any other user that can view the profile including administrators and/or superusers. This issue has been patched in version 10.1.0.

Affected products

• Dnnsoftware DotNetNuke: before 10.1.0 (fixed in 10.1.0); version 10.1.0 only

Published 2025-09-23. Last modified 2026-09-30.