Cross-site scripting (XSS) vulnerability in the wp_explain_nonce function in the nonce AYS functionality (wp-includes/functions.php) for WordPress 2.0 before 2.0.9 and 2.1 before 2.1.1 allows remote attackers to inject arbitrary web script or HTML via the file parameter to wp-admin/templates.php, and possibly other vectors involving the action variable.
http://www.vupen.com/english/advisories/2007/0741
http://www.securityfocus.com/bid/22534
http://www.gentoo.org/security/en/glsa/glsa-200703-23.xml
http://trac.wordpress.org/ticket/3781
http://trac.wordpress.org/changeset/4877
http://trac.wordpress.org/changeset/4876
http://secunia.com/advisories/24566