Webtrees 2.1.18 is vulnerable to Directory Traversal. By manipulating the "media_folder" parameter in the URL, an attacker (in this case, an administrator) can navigate beyond the intended directory (the 'media/' directory) to access sensitive files in other parts of the application's file system.

Multiple cross-site scripting (XSS) vulnerabilities in modules_v3/googlemap/wt_v3_street_view.php in webtrees before 1.5.2 allow remote attackers to inject arbitrary web script or HTML via the (1) map, (2) streetview, or (3) reset parameter.