PHP 8.5.7 StreamBucket SOAP RCE — php-fpm Spawning Unexpected Shell or Utility

Ibrahim Saud@tektrix

•updated Jun 30, 2026•1•0•1

Detects anomalous child process creation from PHP-FPM or PHP web worker processes. This is indicative of exploitation activity, specifically targeting vulnerabilities in PHP environments where deserialization or memory access (e.g., ASLR bypass via /proc/self/maps) leads to unauthorized code execution and subsequent command-line tool usage.