---
id: CVE-2025-59821
title: >-
  DNN (formerly DotNetNuke) is an open-source web content management platform
  (CMS) in the Microsoft ecosystem
summary: >-
  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 …
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'
cwe:
  - CWE-79
vendor: dnnsoftware
product: dotnetnuke
affected:
  - dotnetnuke < 10.1.0
patched:
  - dotnetnuke 10.1.0
published: '2025-09-23'
updated: '2026-10-11'
sourceUpdated: '2026-10-11T20:10:00.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-59821'
references:
  - url: >-
      https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-jc4g-c8ww-5738
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00212
epssPercentile: 0.10621
ingestedAt: '2026-10-12T14:50:33.984Z'
---

## Overview

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.

## Affected

- `dotnetnuke < 10.1.0`

## Remediation

Upgrade past the affected range:

- `dotnetnuke 10.1.0`