The t3lib_div::RemoveXSS API method in TYPO3 4.4.0 through 4.4.13, 4.5.0 through 4.5.13, 4.6.0 through 4.6.6, 4.7, and 6.0 allows remote attackers to bypass the cross-site scripting (XSS) protection mechanism and inject arbitrary web script or HTML via non printable characters.
http://www.securityfocus.com/bid/52771
http://www.openwall.com/lists/oss-security/2012/03/30/4
http://www.debian.org/security/2012/dsa-2445
http://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2012-001/