mold behind drywall near plumbing 24

https://acornmetric.com/s/aX6w9f7ZQx6XiOxHui4Cp

There's a faint musty smell in the bathroom that wasn't there before, and I noticed the drywall near the toilet feels a bit soft. After peeking behind the baseboard, I found a patch of black mold, likely from a slow leak in the plumbing. It's spreading behind the wall, and I'll need to cut out the damaged drywall and address the moisture issue before it gets worse.