PHP2Shell is two critical PHP flaws, CVE-2026-109618 and CVE-2026-109619, that can let a stranger run commands on your web server without logging in. On Apache mod_php, it can happen before your application code even loads. We unpack which PHP setups are exposed, why PHP says updating is the only safe fix, what to do about end-of-life PHP, and three questions every CISO should ask about a web-tier foothold. Update: on 26 Oct, researchers reported the first successful in-the-wild exploitation.