Because springform pans comprise two separate pieces (a flat base and detachable, form-fitting rim), they are notoriously known for leaking. There is no seal between the base and rim, meaning the batter can leak out, and water from a bain-marie can leak in.

Are springform pans leak proof?

Since the bottom and sides of the pan do not have a strong seal, there's a chance your batter can leak out and all over your oven.

How do I make sure my springform pan is not leaking?

So, to prevent or minimize leaks, most bakers line the inside of a springform pan with parchment paper to help seal the attachment. Additionally, wrapping the base's exterior with aluminum foil or saran wrap will deter leaking out or seeping into the pan.