Release Date: March 03, 2016
Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
Affected Versions: version 0.9.9 and below
Vulnerability Type: Cross-Site Scripting
Problem Description: The extension fails to properly sanitize data from TYPO3 fe_users records.
Solution: An updated version 0.9.11 is available from the TYPO3 Extension Manager and at https://typo3.org/extensions/repository/download/listfeusers/0.9.11/t3x/. Users of the extension are advised to update the extension as soon as possible.
Credits: Credits go to Torben Hansen who reported the vulnerability.