scripts/setup.php (aka the setup script) in phpMyAdmin 2.11.x before 2.11.10 calls the unserialize function on the values of the (1) configuration and (2) v[0] parameters, which might allow remote attackers to conduct cross-site request forgery (CSRF) attacks via unspecified vectors.
http://www.vupen.com/english/advisories/2010/0910
http://www.phpmyadmin.net/home_page/security/PMASA-2010-3.php
http://www.debian.org/security/2010/dsa-2034
http://secunia.com/advisories/39503
http://secunia.com/advisories/38211
http://phpmyadmin.svn.sourceforge.net/viewvc/phpmyadmin?view=rev&revision=13149
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00007.html