Multiple cross-site scripting (XSS) vulnerabilities in BilboBlog 0.2.1 allow remote authenticated administrators to inject arbitrary web script or HTML via the (1) content parameter to admin/update.php, related to conflicting code in widget.php; and allow remote attackers to inject arbitrary web script or HTML via the (2) titleId parameter to head.php, reachable through index.php; the (3) t_lang[lang_copyright] parameter to footer.php; the (4) content parameter to the default URI under admin/; the (5) url, (6) t_lang[lang_admin_help], (7) t_lang[lang_admin_clear_cache], (8) t_lang[lang_admin_home], and (9) t_lang[lang_admin_logout] parameters to admin/homelink.php; and the (10) t_lang[lang_admin_new_post] parameter to admin/post.php.  NOTE: some of these details are obtained from third party information.