PHP CVE-2026-109618/109619 — self-contained unauthenticated RCE on stock PHP 8.5.11 (in-band PS(id)→cookie memory disclosure + UAF chain), full control ladders, fixed-version negative control on 8.5.12
Proof-of-Concept (PoC) exploit for php2shell (CVE-2026-109618 / CVE-2026-109619), demonstrating remote code execution in vulnerable PHP environments. For security research and educational purposes only.