Release Date: November 14, 2016
Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
Affected Versions: version 0.1.2 and below
Vulnerability Type: SQL Injection
Problem Description: The extension fails to properly sanitize user input and is vulnerable to SQL Injection.
Solution: An updated version 0.1.3 is available from the TYPO3 Extension Manager and at https://typo3.org/extensions/repository/download/if_membersheet/0.1.3/t3x/. Users of the extension are advised to update the extension as soon as possible.
Credits: Credits go to Ingo Schmitt who discovered and reported the vulnerability.