WordPress Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) Vulnerability - CVE-2008-4769
Directory traversal vulnerability in the get_category_template function in wp-includes/theme.php in WordPress 2.3.3 and earlier and 2.5 allows remote attackers to include and possibly execute arbitrary PHP files via the cat parameter in index.php. NOTE: some of these details are obtained from third party information.