CVE-2020-37023
Unknown Unknown - Not Provided
File Upload Bypass in Koken CMS 0.22.24 Enables Remote Code Execution

Publication date: 2026-01-30

Last updated on: 2026-01-30

Assigner: VulnCheck

Description
Koken CMS 0.22.24 contains a file upload vulnerability that allows authenticated attackers to bypass file extension restrictions by renaming malicious PHP files. Attackers can upload PHP files with system command execution capabilities by manipulating the file upload request through a web proxy and changing the file extension.
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Meta Information
Published
2026-01-30
Last Modified
2026-01-30
Generated
2026-06-16
AI Q&A
2026-01-31
EPSS Evaluated
2026-06-15
NVD
CVE-2020-37023
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
koken cms 0.22.24
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-434 The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
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Executive Summary

This vulnerability in Koken CMS 0.22.24 allows authenticated attackers to bypass file extension restrictions during file uploads. By renaming malicious PHP files and manipulating the file upload request through a web proxy, attackers can upload PHP files that execute system commands on the server.

Impact Analysis

The vulnerability can lead to remote code execution on the server hosting Koken CMS, allowing attackers to run arbitrary system commands. This can compromise the server's security, potentially leading to data theft, server control loss, or further attacks within the network.

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