CVE 2014-6300

Cross-site scripting (XSS) vulnerability in the micro history implementation in phpMyAdmin 4.0.x before 4.0.10.3, 4.1.x before 4.1.14.4, and 4.2.x before 4.2.8.1 allows remote attackers to inject arbitrary web script or HTML, and consequently conduct a cross-site request forgery (CSRF) attack to create a root account, via a crafted URL, related to js/ajax.js.

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