Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
Affected Versions: Version 3.3.0 and all versions below
Vulnerability Type: Cross-Site Scripting vulnerability
Solution: An updated version 3.4.0 is available from the TYPO3 extension manager and at typo3.org/extensions/repository/view/phpmyadmin/3.4.0/. Users of the extension are advised to update the extension as soon as possible.
Credits: Credits go to Masako Oono who found the issue in phpMyAdmin. Furthermore the TYPO3 Security Team wishes to thank the extension maintainer Andreas Kundoch for fixing the issue by upgrading phpMyAdmin to the latest stable version.