CVE-2020-37023

Koken CMS 0.22.24 - Arbitrary File Upload

CVSS 8.7 HIGHEPSS 0.6%CWE-434

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.7EPSS 0.6%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

30 Jan 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products

Koken · Koken CMS

References

http://koken.me/https://github.com/V1n1v131r4/Bypass-File-Upload-on-Koken-CMS/blob/master/README.md https://www.exploit-db.com/exploits/48706 https://www.softaculous.com/apps/cms/Koken https://www.vulncheck.com/advisories/koken-cms-arbitrary-file-upload