TITLE: jSchool Advanced "action" Cross-Site Scripting PRODUCT: jSchool Advanced PRODUCT URL: http://jogjacamp.com/script_4_jSchool_Advanced.html RESEARCHERS: underground-stockholm.com RESEARCHERS URL: http://underground-stockholm.com/ BUG: Input passed via the "action" parameter to index.php is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.