Magento array_merge() TypeError in system.log after include (StyleSmuggler)

Arnold Chan@slaz

•updated Sep 7, 2026•0•0•0

Detects a PHP TypeError in Magento system logs where array_merge() is called with an integer argument following an include statement. This signature is indicative of exploitation attempts targeting Magento sites using the StyleSmuggler vulnerability, which often involves malicious file inclusion and code execution.