OkCupid: Xss high issue in www.okcupid.com main domain in users signup page

Xss high issue in www.okcupid.com main domain in users signup page Poc url : you can use any url below for reproduce xss issue https://www.okcupid.com/signup?nextpage=%2Fsignup%2Fpaths%2Fsplashnewinga%2F3.html4ee57alert"xss by...