gistfile1.php

	$category_arr = array();
	$current_category = get_the_category();
	
	foreach ( $current_category as $cat ) {
		$category_arr[] = $cat->term_id;
	}
	
	$args = array(
		'post_type' => 'cpt_name',
		'post_status' => 'publish',
		'post__not_in' => array( get_the_id() ),
		'category__in' => $category_arr,
	);
	$post_query = new WP_Query( $args );
	
	if ( $post_query->have_posts() ) {
		while( $post_query->have_posts() ) {
			$post_query->the_post();
			//...
		}
		wp_reset_postdata();
	}