CVE-2026-63223

CVE-2026-63223 — CodeIgniter 4 File Upload RCE Magic Bytes Bypass → isimage/mimein → PHP Webshell → RCE Overview CVE-2026-63223 is a critical-severity CVSS 9.8 unauthenticated remote code execution vulnerability in CodeIgniter 4 , a PHP full-stack web framework, affecting versions prior to 4.7.4...