File Upload Vulnerability in DNN CMS by DNN Software
CVE-2025-59547

5.3MEDIUM

Key Information:

Vendor

Dnnsoftware

Status
Dnn.platform
Vendor
CVE Published:
23 September 2025

What is CVE-2025-59547?

DNN, an open-source web content management platform, has a security weakness in the CKEditor file upload endpoint prior to version 10.1.0. This vulnerability allows attackers to exploit insufficient filename sanitization, enabling the upload of files with specially crafted Unicode characters. Such files can translate into paths that potentially expose sensitive internal network resources of the hosted site. A patch has been implemented in version 10.1.0 to mitigate this risk.

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Deploy the Patch

Affected Version(s)

Dnn.Platform < 10.1.0

References

https://github.com/dnnsoftware/Dnn.Platform/security/advi...
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CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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