mXSSmXSS Tuesday, 6 May 2014 Mutation XSS was coined by me and Mario Heiderich to describe an XSS vector that is mutated from a safe state into an unsafe unfiltered state. The most common form of mXSS is from incorrect reads of innerHTML. A good example of mXSS was discovered by Mario where the listing element mutated its contents to execute XSS. <listing><img src=1 onerror=alert(1)></listing> W
