CVE-2016-20023
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-12-05

Last updated on: 2025-12-17

Assigner: MITRE

Description
In CKSource CKFinder before 2.5.0.1 for ASP.NET, authenticated users could download any file from the server if the correct path to a file was provided.
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Meta Information
Published
2025-12-05
Last Modified
2025-12-17
Generated
2026-06-16
AI Q&A
2025-12-05
EPSS Evaluated
2026-06-15
NVD
CVE-2016-20023
EUVD
EUVD-2016-10801
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
cksource ckfinder to 2.5.0.1 (inc)
cksource ckfinder 2.6.3
cksource ckfinder 2.5.0.1
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-23 The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory.
CWE-22 The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
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Executive Summary

This vulnerability in CKSource CKFinder before version 2.5.0.1 for ASP.NET allows authenticated users to download any file from the server if they know the correct path to that file.

Impact Analysis

The vulnerability can lead to unauthorized disclosure of sensitive files on the server, potentially exposing confidential information to authenticated users who should not have access to those files.

Mitigation Strategies

To mitigate this vulnerability, you should update CKFinder for ASP.NET to version 2.6.3 or later, as this version includes fixes for improper file upload handling and enhanced security measures. Additionally, ensure that file upload validation is properly configured to reject files without extensions and implement protections against content sniffing attacks in web browsers. [2]

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