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...

CVE-2026-63223-POC

CVE-2026-63223 PoC — CodeIgniter 4 File Upload RCE CVSS 9.8 Critical | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CWE-434 : Unrestricted Upload of File with Dangerous Type Fixed : CodeIgniter 4 v4.7.4 Advisory : GHSA-mmj4-63m4-r6h5 Vulnerability Summary CodeIgniter 4's isimage and mimein file upload...