PHP2Shell on Ubuntu: How to Verify and Install the PHP Security Patch
php
dev.to
On October 21, 2026, the PHP security team released emergency fixes for two critical vulnerabilities that could allow unauthenticated remote code execution (RCE). The issues, commonly discussed as PHP2Shell, are tracked as: CVE-2026-109618 — Remote code execution through out-of-memory corruption. CVE-2026-109619 — Remote code execution through stale internal request state. If you run PHP on an Ubuntu VPS, updating is important. But there's a detail that can easily cause confusion: an Ubu