PHP2Shell (CVE-2026-109618 & CVE-2026-109619): The Critical PHP Zero-Day Explained & How to Secure Your Server
On October 21, 2026, the PHP Project, CERT-EU, and major cloud providers issued an emergency security advisory for two critical vulnerabilities tracked as CVE-2026-109618 and CVE-2026-109619—collectively dubbed PHP2Shell. Rated 9.2 (Critical) on the CVSS v4.0 scale, these flaws affect every version of PHP from 5.4 through 8.5.11. They allow an unauthenticated attacker to execute remote…
