I have a modern Bialetti stovetop moka pot. It's been used in an induction hob.
It has developed a leak on the side of the base
How does that happen?
Can it be repaired?
Unfortunately I can give you only a half-answer.
A) No, I can’t explain what caused the hole. It looks somewhat corroded and I wonder where the discoloration comes from - maybe worth checking the cause of that and the composition of your water?
B) I discourage repairing the hole in general. For two reasons:
In short, you will need either experience beyond some household tinkering (which I kind of suspect you don’t have, because then you’d probably have patched it up already instead of asking here) or have to pay a professional - which considering the price of a new pot probably isn’t economical. (If this pot has a special emotional meaning, other considerations come into play, of course.)
But whatever you do, I encourage you to do some more digging into probable causes before you end up with another hole in the new pot.