CVE-2020-37023 - CVE House
Back to Database
Status published High CVE-2020-37023

Koken CMS 0.22.24 - Arbitrary File Upload

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-37023

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • v1n1v131r4

References

Affected Vendor

Affected Software

Koken CMS
Vulnerable Versions:
0.22.24

Timeline

Official Publish: January 30th, 2026
Last Modified: February 3rd, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-434

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1505.003 Web Shell
Persistence
T1105 Ingress Tool Transfer
Command and Control
T1059 Command and Scripting Interpreter
Execution
T1565.002 Stored Data Manipulation
Impact