Battelle V2I Hub 2.5.1 is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by api/SystemConfigActions.php?action=add and the index.php script. A remote attacker could exploit this vulnerability using the parameterName or _login_username parameter in a specially-crafted URL to execute script in a victim\'s Web browser within the security context of the hosting Web site, once the URL is clicked. An attacker could use this vulnerability to steal the victim\'s cookie-based authentication credentials.