phpKF CMS 3.00 Beta y6 contains an unauthenticated file upload vulnerability that allows remote attackers to execute arbitrary code by bypassing file extension checks. Attackers can upload a PHP file disguised as a PNG, rename it, and execute system commands through a crafted web shell parameter.
Advisories

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Fixes

Solution

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Workaround

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History

Thu, 15 Jan 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 15 Jan 2026 16:00:00 +0000

Type Values Removed Values Added
Description phpKF CMS 3.00 Beta y6 contains an unauthenticated file upload vulnerability that allows remote attackers to execute arbitrary code by bypassing file extension checks. Attackers can upload a PHP file disguised as a PNG, rename it, and execute system commands through a crafted web shell parameter.
Title phpKF CMS 3.00 Beta y6 - Remote Code Execution (RCE) (Unauthenticated)
Weaknesses CWE-434
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-01-15T18:27:25.683Z

Reserved: 2026-01-10T13:48:08.268Z

Link: CVE-2021-47753

cve-icon Vulnrichment

Updated: 2026-01-15T16:13:53.666Z

cve-icon NVD

Status : Received

Published: 2026-01-15T16:16:06.003

Modified: 2026-01-15T19:16:01.530

Link: CVE-2021-47753

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses