Global – October 27, 2026 -- PHP will ship an emergency patch for two critical core vulnerabilities, CVE-2026-109618 and CVE-2026-109619, on Wednesday, October 21, 2026, at 14:00 UTC (10:00 ET). The PHP security team rates both flaws CVSS v4.0 9.2, and researchers describe them as unauthenticated remote code execution.