The configuration setup script (aka scripts/setup.php) in phpMyAdmin 2.11.x before 2.11.10.1 does not properly restrict key names in its output file, which allows remote attackers to execute arbitrary PHP code via a crafted POST request.
http://www.vupen.com/english/advisories/2010/2231
http://www.vupen.com/english/advisories/2010/2223
http://www.securityfocus.com/bid/42591
http://www.phpmyadmin.net/home_page/security/PMASA-2010-4.php
http://www.mandriva.com/security/advisories?name=MDVSA-2010:163
http://www.debian.org/security/2010/dsa-2097
http://secunia.com/advisories/41185