SQL injection vulnerability in index.php in TYPO3 4.0 allows remote attackers to execute arbitrary SQL commands via the showUid parameter. NOTE: the TYPO3 Security Team disputes this report, stating that "there is no such vulnerability... The showUid parameter is generally used in third-party TYPO3 extensions - not in TYPO3 Core.
https://exchange.xforce.ibmcloud.com/vulnerabilities/52308
http://www.exploit-db.com/exploits/9380
http://secure.t3sec.info/blog/post/2009/08/06/typo3-cms-40-showuid-exploit-not-a-vulnerability/