Most V3.1-style exploits rely on . This occurs when a script takes user input (like a name or subject) and places it directly into a PHP mail() function without proper sanitization.
Security in PHP 8.x has improved, but developers must still follow strict validation protocols. 🚀 php email form validation - v3.1 exploit
Always validate email formats using filter_var($email, FILTER_VALIDATE_EMAIL) . Most V3