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High · 8.8 CVE-2020-37023 EUVD-2020-30953GHSA-jfgg-fv6q-274f

Koken CMS 0.22.24 - Arbitrary File Upload

Published Jan 30, 2026 · Updated Feb 3, 2026 · Assigned by 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.

Affected products

VendorProductAffectedFixed
Koken Koken CMS 0.22.24 —

References