An issue was discovered in phpMyAdmin. With a crafted request parameter value it is possible to initiate a denial of service attack in import feature. All 4.6.x versions (prior to 4.6.5), 4.4.x versions (prior to 4.4.15.9), and 4.0.x versions (prior to 4.0.10.18) are affected.
https://www.phpmyadmin.net/security/PMASA-2016-65