Release Date: February 12, 2014
Bulletin update: September 18, 2014 (added CVE)
Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
Affected Versions: Version 3.5.1 and below
Vulnerability Type: Insecure Unserialize
Problem Description: Failing to sanitize user input properly, tt_news is vulnerable to insecure unserialize.
Solution: An updated version 3.5.2 is available from the TYPO3 extension manager and at http://typo3.org/extensions/repository/download/tt_news/3.5.2/t3x/. Users of the extension are advised to update the extension as soon as possible.
Credits: Credits go to Pascal Jungblut who discovered and reported this issue.