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CVE-2025-59547

DNN's CKEditor File Uploader functionality vulnerable through Unicode obfuscation

Published: Sep 23, 2025Updated: Sep 29, 2025 Sources: CVE List NVDCWE-176
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.2%
Top 84.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 in the internal network of the hosted site. This issue has been patched in version 10.1.0.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-176

Affected Products

dotnetnukednnsoftware
On-premWeb App
Web & CMS Plugins / cms-core
Dnn.Platformdnnsoftware
On-premWeb App
Web & CMS Plugins / cms-core
dnnsoftwarecommercialWeb & CMS Pluginsaka dotnetnuke, dnn.platform, dnn platform

Exploitability

Official Patch Available

References

https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-cgqj-mw4m-v7hp
github.com

Timeline

Published
Sep 23, 2025
Last Updated
Sep 29, 2025

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