Release Date: May 31, 2016
Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
Affected Versions: version 2.5.8 and below
Vulnerability Type: Information Disclosure
Problem Description: Files containing the answered questionnaires are stored in the "typo3temp" directory within the TYPO3 installation. As the extension uses predictable names for the questionnaire answer forms it is easy to guess file names and download answer files.
Solution: An updated version 3.0.14 is available from the TYPO3 Extension Manager and at https://typo3.org/extensions/repository/download/ke_questionnaire/3.0.14/t3x/. Users of the extension are advised to update the extension as soon as possible.
Credits: Credits go to Patrick Hof and Henri Salo who reported the vulnerability.