PHP 8.4.27 Fixes Two Critical Remote Code Execution Flaws (CVSS 9.2): Check Your PHP Version and Update Now PHP 8.4.27 fixes two critical remote code execution flaws, CVE-2026-109618 and CVE-2026-109619. How to check your version, update PHP-FPM and verify, with real output from my own server. Oct 22, 2026 7 min read Security
