// File: App/Rest/Route/View.php

public function send() {
    Csrf::save_token();
    $method = Meta::get_method(); // Sourced from $_POST['snow-monkey-forms-meta']['method']

    // VULNERABILITY: If 'method' is 'input', the critical CSRF check is BYPASSED.
    if ( 'input' === $method ) {
        return $this->_send(); // Direct execution flow to _send()
    }

    // CSRF check is only performed for other methods (e.g., 'confirm', 'complete')
    if ( ! Csrf::validate( Meta::get_token() ) ) { ... }

// File: App/Rest/Route/View.php -> _send()

// 'form_id' is sourced directly from POST data via Meta class without sanitization
$user_dirpath = Directory::generate_user_dirpath( $this->setting->get( 'form_id' ), false );

Directory::do_empty( $user_dirpath, true ); // Recursively delete contents
Directory::remove( $user_dirpath );         // Delete the directory itself

// File: App/Model/Directory.php

public static function generate_user_dirpath( $form_id, $do_create_directory = true ) {
    $saved_token = Csrf::saved_token();
    // ... (Regex check for token exists, but not for form_id) ...

    $user_dir = path_join( static::get(), $saved_token );
    
    // VULNERABILITY: $form_id is appended directly. 
    // WordPress path_join() does NOT resolve or sanitize '../' sequences.
    $user_dir = path_join( $user_dir, (string) $form_id ); 

    return $user_dir;
}

python exploit.py -u <TARGET_URL> -f <TRAVERSAL_PAYLOAD>