...and report it, apologizing for going too far in the first place but explaining how you got there and that you want to cooperate in any way to help them fix i

...and report it, apologizing for going too far in the first place but explaining how you got there and that you want to cooperate in any way to help them fix it. And please, don't tell them you'll give them the bug if they pay you or give you a t-shirt - this is blackmail, most likely (IANAL), and sure to get you in trouble. (but it happens)