---
id: CVE-2025-59547
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, the CKEditor file
  upload endpoint has insufficient sanitization for filenames allowing probing
  network…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-176
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-2025-59547'
references:
  - url: >-
      https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-cgqj-mw4m-v7hp
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00261
epssPercentile: 0.16513
ingestedAt: '2026-10-12T14:50:33.983Z'
---

## Overview

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to version 10.1.0, the CKEditor file upload endpoint has insufficient sanitization for filenames allowing probing network endpoints. A specially crafted request can be made to upload a file with Unicode characters, which would be translated into a path that could expose resources in the internal network of the hosted site. 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`