Get product id within cart-item-data.php

I know it is not a reccomended solution to mess with Woocommerce files but for now my problem has to be dealt with changing some of the contents in the file templates\cart\cart-item-data.php. I want to alter some of the info displayed by the variations in relation of some custom fields of the product. I have created the method but it needs the product id and I can not find a way to get it from within this file. Any ideas?