Cross-site scripting (XSS) vulnerability in CodeIgniter 1.5.3 before 20070626 allows remote attackers to inject arbitrary web script or HTML via (1) String.fromCharCode and (2) malformed nested tag manipulations in an unspecified component, related to insufficient sanitization by the xss_clean function.
https://exchange.xforce.ibmcloud.com/vulnerabilities/35350
http://www.securityfocus.com/archive/1/473190/100/0/threaded
http://securityreason.com/securityalert/2877
http://secunia.com/advisories/25991
http://lists.grok.org.uk/pipermail/full-disclosure/2007-July/064500.html