CVE-2025-59547

DNN's CKEditor File Uploader functionality vulnerable through Unicode obfuscation

Published Sep 23, 2025 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-30901 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.
History
Type Values Removed Values Added
First Time appeared Dnnsoftware dotnetnuke
CPEs cpe:2.3:a:dnnsoftware:dotnetnuke:*:*:*:*:*:*:*:*
Vendors & Products Dnnsoftware dotnetnuke
Type Values Removed Values Added
First Time appeared Dnnsoftware
Dnnsoftware dnn Platform
Vendors & Products Dnnsoftware
Dnnsoftware dnn Platform
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title DNN's CKEditor File Uploader functionality vulnerable through Unicode obfuscation
Weaknesses CWE-176
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Sep 23, 2025, 6:36 PM
Reserved
Sep 17, 2025, 5:04 PM
Status
Analyzed
Published
Sep 23, 2025, 6:15 PM
Modified
Oct 11, 2026, 8:10 PM