Multiple cross-site scripting (XSS) vulnerabilities in roomcloud.php in the Roomcloud plugin before 1.3 for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) pin (2) start_day (3) start_month (4) start_year (5) end_day (6) end_month (7) end_year (8) lang (9) adults or (10) children parameter.