In the WebRTC component in DuckDuckGo 4.2.0, after visiting a web site that attempts to gather complete client information (such as https://ip.voidsec.com), the browser can disclose a private IP address in a STUN request.
                
                    Exploit prediction scoring system (EPSS) score
                    
                        
                            EPSS Score 0.768
                        
                    
                    
                        
                            EPSS Ranking 98.9%