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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.

PUBLISHED Reserved 2026-01-10 | Published 2026-01-15 | Updated 2026-01-15 | Assigner VulnCheck




CRITICAL: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

Unrestricted Upload of File with Dangerous Type

Product status

3.00
affected

Credits

Halit AKAYDIN (hLtAkydn) finder

References

www.exploit-db.com/exploits/50610 exploit

www.exploit-db.com/exploits/50610 (ExploitDB-50610) exploit

www.phpkf.com/ (Official Vendor Homepage) product

www.phpkf.com/indirme.php (Software Download Page) product

cve.org (CVE-2021-47753)

nvd.nist.gov (CVE-2021-47753)

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