Multiple cross-site scripting (XSS) vulnerabilities in the WP GuestMap plugin 1.8 and earlier for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) zl, (2) mt, or (3) dc parameter to guest-locator.php; the (4) zl, (5) mt, (6) activate, or (7) dc parameter to online-tracker.php; the (8) zl, (9) mt, or (10) dc parameter to stats-map.php; or the (11) zl, (12) mt, (13) activate, or (14) dc parameter to weather-map.php.