It has been discovered that the extension "Formhandler" (formhandler) is vulnerable to SQL-Injection.
Release Date: September 25, 2013
Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
Affected Version: 1.6.1 and alll versions below
Vulnerability Type: SQL Injection
Problem Description: Failing to properly sanitize user-supplied input the extension is vulnerable to SQL-Injection, Arbitrary Code Execution and Authentication Bypass.
Solution: An updated version 1.6.2 is available from the TYPO3 extension manager and at <http://typo3.org/extensions/repository/view/formhandler/1.6.2/>. Users of the extension are advised to update the extension as soon as possible.
Credits: Credits go to Rik Willems who discovered and reported the issue.