Recently found black mold behind a base board in my bathroom next to the shower. It looks like it may not be severe, yet. I am wondering if there is a fix for it if so. Any info would be helpful. I can post photos if that would be helpful!

New user here, hi! The backstory goes like this: my bedroom recently developed a musty smell. After inspecting everything, I found the source: the radiator piping had developed a leak inside the wall, under the wood floor. (Forgive my photography, I know it sucks! :) ) Once the leak was...