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Home / CVE DB / CVE-2026-40321
Standard
Vulnerability Identifier

CVE-2026-40321

2026-04-17
Severity Assessment
8.0
HIGH
CVSS v3.x Score
Clinical Analysis (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.

Vector Sequencing

Attack Parameters

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Impact Consequences

Technical Impact

Changed
Scope
High
Confidentiality
High
Integrity
High
Availability
AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Weakness Classification

CWE-CWE-87

View CWE Details ↗
Timeline

Time Line

PUBLICATION
17 Apr 2026
Impact Statistics

Key Metrics

CVSS Score
8.0
HIGH
Remediation Protocol

Recommended Solution

No automatic solution found. Check vendor references.
Patch Library
No direct patch listed in database.
Recommended Actions for Administrators

Immediate Action Plan

1. Inventory

Identify all affected systems in your infrastructure.

2. Assessment

Assess exposure and criticality for your organization.

3. Mitigation

Apply patches or available workarounds.

4. Verification

Test and confirm effectiveness of applied measures.

Sources & Bibliography
NIST NVD MITRE CVE External Reference ↗ External Reference ↗