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HIGHCVE-2026-40321Published Modified CNA GitHub_M

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

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.

Metrics

CVSS v3.1
8.1
Severity
HIGH
Fixed in
—
Affected Products
1
Affected packages
  • dnnsoftware / Dnn.Platform
    < 10.2.2
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
References