onsite.ework.com XSS vulnerability

Vulnerable URL: https://onsite.ework.com/default.asp?errmsg=The+link+clicked+to+login+to+the+application+is+either+no+longer+valid+or+does+not+contain+authorization+for+you+to+use+it.++Please+login+to+the+application+with+your+username+and+password."'--!=F92EFE5DC0484CE4BFD57C7E2116E649 Details:...