CVE-2026-40321: high-severity vulnerability in dnnsoftware Dnn.Platform
DotNetNuke.Core has stored cross-site-scripting (XSS) via SVG upload
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1epss 6.4%
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.
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Affected products
dnnsoftware · Dnn.PlatformRelated CVEs — dnnsoftware Dnn.Platform
In the same product, most dangerous first.
CVE-2025-64095CRITICALDNN Insufficient Access Control - Image Upload allows for Site Content OverwriteEPSS 47.0%CVE-2025-52488HIGHDNN.PLATFORM leaks NTLM hash via SMB Share Interaction with malicious user inputEPSS 35.8%CVE-2025-59545CRITICALDNN Vulnerable to Stored Cross-Site Scripting (XSS) in the Prompt moduleEPSS 0.5%CVE-2025-59535MEDIUMDotNetNuke.Core allows loading of unused themes on anonymous clients through query parametersEPSS 0.4%CVE-2025-32374MEDIUMPossible Denial of Service (DoS) in DNN.PLATFORM registrationEPSS 0.4%CVE-2025-32373MEDIUMDNN allows a registered user to enumerate and access files they should not have access toEPSS 0.4%