Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Dnnsoftware | Dotnetnuke | < 10.2.2 |
Related Weaknesses (CWE)
References
- https://github.com/dnnsoftware/Dnn.Platform/releases/tag/v10.2.2Release Notes
- https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-ffq7-898w-9Vendor Advisory
FAQ
What is CVE-2026-40321?
CVE-2026-40321 is a vulnerability with a CVSS score of 8.0 (HIGH). 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 inclu...
How severe is CVE-2026-40321?
CVE-2026-40321 has been rated HIGH with a CVSS base score of 8.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-40321?
Check the references section above for vendor advisories and patch information. Affected products include: Dnnsoftware Dotnetnuke.