phpMyAdmin is a tool written in PHP intended to handle the administration of MySQL databases from a web-browser.
phpMyAdmin contains several security issues:
By sending a specially-crafted request, an attacker can include and execute arbitrary PHP code or cause path information disclosure. Furthermore the XSS issue allows an attacker to inject malicious script code, potentially compromising the victim's browser. Lastly the improper escaping of special characters results in unintended privilege settings for MySQL.
There is no known workaround at this time.
All phpMyAdmin users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-db/phpmyadmin-2.6.1_p2-r1"