the “Indexed search” extension 2.9.0 for Typo3 suffers from a cross site scripting vulnerability. Fixed in Typo3 4.0.2.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/50501/Typo3v4.xss.txt
Source: https://packetstormsecurity.com/files/50501/Typo3v4.xss.txt.html