CVE-2025-59535: Dnnsoftware DotNetNuke

Medium severity, CVSS 6.5. EPSS: 0.4% 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, arbitrary themes can be loaded through query parameters. If an installed theme had a vulnerability, even if it was not used on any page, this could be loaded on unsuspecting clients without knowledge of the site owner. This issue has been patched in version 10.1.0.

Affected products

• Dnnsoftware DotNetNuke: before 10.1.0 (fixed in 10.1.0)

Published 2025-09-22. Last modified 2026-06-17.