CVE-2026-40321

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 v3 8.0 HIGH

8.0^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.3 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/dnnsoftware/Dnn.Platform/releases/tag/v10.2.2	Release Notes
https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-ffq7-898w-9jc4	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:dnnsoftware:dotnetnuke:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-04-17 22:16

Updated : 2026-06-17 10:45

NVD link : CVE-2026-40321

Mitre link : CVE-2026-40321

CVE.ORG link : CVE-2026-40321

JSON object : View

Products Affected

dnnsoftware

dotnetnuke

CWE

CWE-87

Improper Neutralization of Alternate XSS Syntax

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