DNA View

High Severity Vulnerability

This vulnerability has been rated as High severity. Immediate action is recommended.

CVE-2026-40321

High

Low Medium High Critical

8.0

CVSS Score

Published: Apr 17, 2026

Last Modified: Apr 17, 2026

CWE: CWE-87

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 Metrics

Common Vulnerability Scoring System

Vector String:

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

References & Resources

Severity Details

8.0

out of 10.0

High

Weakness Type (CWE)

CWE-87

Improper Neutralization of Alternate XSS Syntax

Description: The product does not neutralize or incorrectly neutralizes user-controlled input for alternate script syntax.
Typical Severity: Medium
Abstraction Level: Variant