[Plugin: SimpleMap] lacks of security

Great plugin. But, I have found some bugs

in csv-process.php

// IMPORT CSV file
	else if ( $_POST['action'] == 'import' ) {

		$ignorelines 	= '';
		$csvcontent 	= file_get_contents( $_FILES['uploadedfile']['tmp_name'] );
		$lineseparator 	= "\n";
		$linescontent 	= explode( $lineseparator, $csvcontent );
		$count 			= count( $linescontent );

Non-register user can upload CSV.