The checkHTTP function in libraries/Config.class.php in phpMyAdmin 4.5.x before 4.5.5.1 does not verify X.509 certificates from api.github.com SSL servers, which allows man-in-the-middle attackers to spoof these servers and obtain sensitive information via a crafted certificate.
https://www.phpmyadmin.net/security/PMASA-2016-13/
https://github.com/phpmyadmin/phpmyadmin/commit/e42b7e3aedd29dd0f7a48575f20bfc5aca0ff976
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178869.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178562.html