High 8.1Published Apr 17, 2026

CVE-2026-40321DotNetNuke.Core has stored cross-site-scripting (XSS) via SVG upload

Updated under an hour ago (Oct 27, 2026, 4:23 PM ET)

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It affects dnnsoftware Dnn.Platform and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for dnnsoftware Dnn.Platform

Exploited in the last 30 days

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: 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-87
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Apr 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

dnnsoftware Dnn.Platform dnnsoftware:dnn.platform (from the name)	before 10.2.2	CNA record
dnnsoftware dotnetnuke dnnsoftware:dotnetnuke	before 10.2.2	NVD

References

References

https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-ffq7-898w-9jc4	x-refsource-confirm, vendor-advisory
https://github.com/dnnsoftware/Dnn.Platform/releases/tag/v10.2.2	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.