VULNERABILITY INTELLIGENCE

CVE-2026-40321

CVSS score8 HIGH

EPSS probability6.41%

CISA KEVNot currently listed

Published2026-04-17

Last modified2026-10-26

Description

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to version 10.2.2, a user could upload a specially crafted SVG file that could include scripts that can target both authenticated and unauthenticated DNN users. The impact is increased if the scripts are run by a power user. Version 10.2.2 patches the issue.