CVE 2016-6629

An issue was discovered in phpMyAdmin involving the $cfg['ArbitraryServerRegexp'] configuration directive. An attacker could reuse certain cookie values in a way of bypassing the servers defined by ArbitraryServerRegexp. All 4.6.x versions (prior to 4.6.4), 4.4.x versions (prior to 4.4.15.8), and 4.0.x versions (prior to 4.0.10.17) are affected.

See the CVE page on Mitre.org for more details.