What is a WebRTC leak?
WebRTC is a browser technology that helps voice calls, video calls, and peer-to-peer features work directly in the browser. A WebRTC leak happens when your browser reveals an IP address through WebRTC that websites would not normally see through your VPN or proxy connection.
If the exposed WebRTC IP is the public IP from your regular network or does not match your VPN IP, websites may be able to identify your real connection.