CVE-2025-59821 MEDIUM

CVE-2025-59821: DNN vulnerable to Reflected Cross-Site Scripting (XSS) using url to profile

Vendor Dnnsoftware
Product Dnn.Platform
Weakness CWE-79 · XSS
Published September 23, 2025
Last update September 23, 2025

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

September 23, 2025 CVE published
September 23, 2025 Record updated