The fill hoses connect to the back of the washer and the wall faucets. Loose hoses can cause leaks during the rinse cycle. Feel where the hoses connect to the washer for a leak. Tighten loose hoses with pliers.
Leaks can occur if the washer is overloaded or has an unbalanced load. Water splashes off the laundry that is sitting up too high and close to the lid. For an overloaded washer, just remove some of the items. For a unbalanced washer, redistribute the items in the washer.
Leaks can occur when the washer is not sitting level. This can be caused by the washer tub not sitting centered or the washer moving back and forth during the cycle. The washer has legs that can be adjusted with a wrench so that you can get it level. You might need someone to help you lift up the washer so you can access the legs.
A loose drain hose or clogged drain can produce a rinse cycle leak. The drain hose is connected to the lower back of the washer. If it's loose, give it a firm push to get it back in place. Clear a clogged drain by pouring in some household drain cleaner.