CVE-2025-59821
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-23

Last updated on: 2025-09-29

Assigner: GitHub, Inc.

Description
DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to version 10.1.0, DNN’s URL/path handling and template rendering can allow specially crafted input to be reflected into a user profile that is returned to the browser. In these cases, the application does not sufficiently neutralize or encode characters that are meaningful in HTML, so an attacker can cause a victim’s browser to interpret attacker-controlled content as part of the page’s HTML. This issue has been patched in version 10.1.0.
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Meta Information
Published
2025-09-23
Last Modified
2025-09-29
Generated
2026-06-16
AI Q&A
2025-09-23
EPSS Evaluated
2026-06-14
NVD
CVE-2025-59821
EUVD
EUVD-2025-30894
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
dnnsoftware dotnetnuke to 10.1.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

This vulnerability in DNN (DotNetNuke) prior to version 10.1.0 involves improper handling of URL/path input and template rendering. Specifically, the application does not properly neutralize or encode HTML characters in user input, allowing specially crafted input to be reflected into a user profile that is returned to the browser. This can cause the victim's browser to interpret attacker-controlled content as part of the page's HTML, leading to potential security issues such as cross-site scripting (XSS).

Impact Analysis

The vulnerability can impact users by allowing attackers to inject malicious content into web pages viewed by victims. This can lead to the victim's browser executing attacker-controlled HTML or scripts, potentially resulting in session hijacking, theft of sensitive information, or other malicious actions. The CVSS score indicates a moderate severity with high confidentiality impact but no impact on integrity or availability.

Mitigation Strategies

Upgrade DNN to version 10.1.0 or later, as this version contains the patch that fixes the vulnerability related to insufficient neutralization or encoding of HTML characters in user profiles.

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