Release Date: June 15, 2015
Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
Affected Versions: version 1.1.1 and below
Vulnerability Type: Cross-Site Scripting
Suggested CVSS v2.0: AV:N/AC:L/Au:S/C:P/I:P/A:N/E:P/RL:U/RC:C (What's that?)
Problem Description: The extension fails to properly escape user input in HTML context.
Solution: Versions of this extension that are known to be vulnerable will no longer be available for download from the TYPO3 Extension Repository. The extension author is no longer maintaining this extension. Please uninstall and delete the extension folder from your installation.
Credits: Credits go to Torben Hansen who discovered and reported the issue.
General advice: Follow the recommendations that are given in the TYPO3 Security Guide. Please subscribe to the typo3-announce mailing list to receive future Security Bulletins via E-mail.