A website meant to set up Xfinity internet service may have exposed customers' Wi-Fi names and passwords. Luckily, Comcast already has this bug under control.

The Xfinity site asked for a person's account ID and home address in order to activate that home's router, but once you entered this information it showed that home's router name and password in plaintext, reported ZDNet on Monday. You could use this service to get anyone's Wi-Fi name and password as long as you had their account ID or address -- both easily available in any discarded bill.

You didn't even need that person's full address to get their Wi-Fi info, according to ZDNet, which said a house or apartment number was enough to show the rest of their address.

Once logged in using an account number and address, you also had the option of changing the Wi-Fi name and password, potentially locking the owner out.

Comcast told ZDNet that this service is no longer active, and that the issue was addressed hours after the company found out about it. If you go to the Xfinity website now, you'll see that you have to verify your account with a username and password or verification code sent to your phone.

Comcast didn't immediately respond to a request for comment.