CVE-2009-1581
functions/mime.php in SquirrelMail before 1.4.18 does not protect the application’s content from Cascading Style Sheets (CSS) positioning in HTML e-mail messages, which allows remote attackers to spoof the user interface, and conduct cross-site scripting (XSS) and phishing attacks, via a crafted message.
Date published : 2009-05-14
http://lists.apple.com/archives/security-announce/2010//Jun/msg00001.html