PHP Foundation reveals Claude scanned PHP code, frontiers models helped find two critical RCE bugs

Hesamation · x · 2026-10-22

The PHP Foundation shipped PHP 8.5.12/8.4.27/8.3.36/8.2.35 fixing two critical unauthenticated RCE vulnerabilities — CVE-2026-109618 (OOM corruption triggering memory corruption on Apache modphp with default settings, plus PHP-FPM paths) and CVE-2026-109619 (stale global state leading to use-after-free). It also disclosed that Anthropic's Claude (Mythos) scanned PHP earlier this year, with access to OpenAI's Daybreak Red for exploit validation, sparking debate about keeping frontier cyber models in few hands.

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