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

8.1 / 10

HIGH

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

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.

Basic Information

ID CVE-2026-40321

Source GitHub_M

Published Apr 17, 2026 at 21:10

Affected Product

Vendor dnnsoftware

Product Dnn.Platform

Version < 10.2.2

Affected Versions dnnsoftware Dnn.Platform < 10.2.2

CWE Classification

CWE-87

References

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    "published": "2026-04-17T21:10:33.192Z",
    "modified": "2026-04-17T21:10:33.192Z",
    "type": "cve",
    "title": "DotNetNuke.Core has stored cross-site-scripting (XSS) via SVG upload",
    "source": "GitHub_M",
    "references": "https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-ffq7-898w-9jc4\nhttps://github.com/dnnsoftware/Dnn.Platform/releases/tag/v10.2.2",
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