phpMyAdmin 2.6.0-pl2, and other versions before 2.6.1, with external transformations enabled, allows remote attackers to execute arbitrary commands via shell metacharacters.
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.
libraries/File.class.php in phpMyAdmin 2.11.x before 2.11.10 uses predictable filenames for temporary files, which has unknown impact and attack vectors.
libraries/File.class.php in phpMyAdmin 2.11.x before 2.11.10 creates a temporary directory with 0777 permissions, which has unknown impact and attack vectors.