CVE-2025-59547 - CVE House
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Status published Medium CVE-2025-59547

DNN's CKEditor File Uploader functionality vulnerable through Unicode obfuscation

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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CVE-2025-64095
DNN Insufficient Access Control - Image Upload allows for Site Content Overwrite
Critical 10
CVE-2025-64094
DNN vulnerable to stored cross-site-scripting (XSS) via SVG upload
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CVE-2025-62802
DNN CKEditor Provider allows unauthenticated upload out-of-the-box
Medium 4.3
CVE-2025-59821
DNN vulnerable to Reflected Cross-Site Scripting (XSS) using url to profile
Medium 6.5
CVE-2025-59548
DNN Vulnerable to Reflected Cross-Site Scripting (XSS) in CKEditor File Browser
Medium 5.9

Affected Vendor

dnnsoftware

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Affected Software

Dnn.Platform
Vulnerable Versions:
< 10.1.0

Timeline

Official Publish: September 23rd, 2025
Last Modified: September 23rd, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weaknesses (CWE)

CWE-176

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.