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.
History

Tue, 03 Feb 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 03 Feb 2026 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Koken
Koken cms
Vendors & Products Koken
Koken cms

Fri, 30 Jan 2026 22:30:00 +0000

Type Values Removed Values Added
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.
Title Koken CMS 0.22.24 - Arbitrary File Upload
Weaknesses CWE-434
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-01-30T22:07:08.591Z

Updated: 2026-02-03T20:35:43.390Z

Reserved: 2026-01-28T18:18:30.522Z

Link: CVE-2020-37023

cve-icon Vulnrichment

Updated: 2026-02-03T20:35:39.490Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-01-30T23:16:06.960

Modified: 2026-02-04T16:34:21.763

Link: CVE-2020-37023

cve-icon Redhat

No data.