High 8.8Published Jan 30, 2026

CVE-2020-37023Koken CMS 0.22.24 - Arbitrary File Upload

Updated under an hour ago (Oct 26, 2026, 8:10 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for Koken CMS

Exploited in the last 30 days

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: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-434
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Feb 3, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Koken Koken CMS koken:cms (from the name)	0.22.24	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.