Cross-site scripting (XSS) vulnerability in SqWebMail 5.0.4 allows remote attackers to inject arbitrary web script or HTML via an e-mail message containing Internet Explorer "Conditional Comments" such as "[if]" and "[endif]".
https://exchange.xforce.ibmcloud.com/vulnerabilities/22158
http://www.ubuntu.com/usn/usn-201-1
http://www.securiteam.com/unixfocus/5RP0220GUS.html
http://www.debian.org/security/2005/dsa-820
http://secunia.com/secunia_research/2005-44/advisory/
http://secunia.com/advisories/17156