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Servers and applications

CVE-2025-59547

Vulnerability in CKEditor's File Uploader functionality through Unicode obfuscation

Severity
Medium 5.3
Published
23 Sept 2025
Last changed
11 Oct 2026
Added to UpHeron
1 Nov 2026
Fixed in
10.1.0
Also known as
GHSA-cgqj-mw4m-v7hp
Sources
NVD, Project advisories (GitHub)

Description

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…

Affected software

SoftwareAffected versions
DNN PlatformServers and applications · cpe:a:dnnsoftware:dotnetnuke
  • Every version before 10.1.0
DNN PlatformServers and applications · github:dnnsoftware/dnn.platform
  • Every version before 10.1.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-59547
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-59547
  • GitHub Advisory Database https://github.com/advisories/GHSA-cgqj-mw4m-v7hp
  • github.com https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-cgqj-mw4m-v7hp