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Vulnerability record · CVE-2026-40321 · published 17 April 2026

CVE-2026-40321: Dnnsoftware dotnetnuke vulnerability

DDnnsoftware · Dotnetnuke

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.

8.0 CVSS 3.1 High EPSS 0.36% · top 72.4% CWE-87 · CWE-87
8.0CVSS 3.1 base score
0.36%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2017-9822DNN (DotNetNuke) cookie deserialization remote code executionDNN (DotNetNuke) before 9.1.1 deserializes attacker-controlled cookie data, allowing remote code execution. The flaw is a code injection (CWE-94) rea…KEVEPSS 95%analysed7.5CVE-2018-15811DNN (DotNetNuke) weak encryption of input parametersDNN (DotNetNuke) versions 9.2 through 9.2.1 use a weak encryption algorithm to protect input parameters. Because the protection is inadequate, data t…KEVEPSS 76%analysed7.5CVE-2018-18325DNN (DotNetNuke) weak encryption of input parametersDNN (DotNetNuke) versions 9.2 through 9.2.2 use a weak encryption algorithm to protect input parameters, and the issue persists because the fix for C…KEVEPSS 74%analysed10.0CVE-2006-3601Dnnsoftware dotnetnuke vulnerability** UNVERIFIABLE ** Unspecified vulnerability in an unspecified DNN Modules module for DotNetNuke (.net nuke) allows remote attackers to gain privileg…EPSS 2.5%9.8CVE-2025-64095Dnnsoftware dotnetnuke unrestricted file upload vulnerabilityDNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to 10.1.1, the default HTML edito…EPSS 45%9.8CVE-2015-2794DotNetNuke install wizard allows unauthenticated reinstall and SuperUser takeoverThe installation wizard in DotNetNuke (DNN) before 7.4.1 can be reached directly at Install/InstallWizard.aspx and used to reinstall the application.…EPSS 75%analysed9.0CVE-2025-59545Dnnsoftware dotnetnuke cross-site scripting vulnerabilityDNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to version 10.1.0, the Prompt mod…EPSS 0.49%8.8CVE-2025-52487Dnnsoftware dotnetnuke incorrect authorization vulnerabilityDNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. In versions 7.0.0 to before 10.0.1, DNN…EPSS 0.35%

Source: NIST National Vulnerability Database (record CVE-2026-40321), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.