What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-30 · updated 2026-06-17
• Weakness: CWE-434

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

• Koken CMS: 0.22.24

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

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