The regex code in Webkit 2.4.11 allows remote attackers to cause a denial of service (memory consumption) as demonstrated in a large number of ($ (open parenthesis and dollar) followed by {-2,16} and a large number of +) (plus close parenthesis).
                
                    Exploit prediction scoring system (EPSS) score
                    
                        
                            EPSS Score 0.009
                        
                    
                    
                        
                            EPSS Ranking 75.3%