Cross-site scripting (XSS) vulnerability in the smarty_function_html_options_optoutput function in distribution/libs/plugins/function.html_options.php in Smarty before 3.1.8 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
http://www.securitytracker.com/id?1027061
http://smarty-php.googlecode.com/svn/trunk/distribution/change_log.txt