Multiple cross-site scripting (XSS) vulnerabilities in wp-login.php in the Genetech Solutions Pie-Register plugin before 1.31 for WordPress, when "Allow New Registrations to set their own Password" is enabled, allow remote attackers to inject arbitrary web script or HTML via the (1) pass1 or (2) pass2 parameter in a register action.  NOTE: some of these details are obtained from third party information.