php2shell (CVE-2026-109618, CVE-2026-109619): Frequently asked questions about critical PHP remote code execution vulnerabilities

Two critical PHP remote code execution vulnerabilities will be patched in an emergency release on October 21. Fixes are only expected for supported PHP 8.x branches. Key takeaways CVE-2026-109618 and CVE-2026-109619 are critical vulnerabilities in PHP, both rated CVSSv4.0 9.2 by the PHP security team.