CVE-2026-109618 and CVE-2026-109619 (PHP2Shell): Two Critical PHP Remote Code Execution Flaws
The PHP security team has announced an emergency security release for Wednesday, October 21, 2026 at 14:00 UTC. It addresses two critical vulnerabilities, both rated CVSS v4.0 9.2. The vulnerabilities are tracked as CVE-2026-109618 and CVE-2026-109619. Both bugs are described as remote code execution issues, meaning an attacker could get their own commands running on a vulnerable server. The route to disclosure was messy.