Secunia Security Advisory – Some vulnerabilities have been reported in SquirrelMail, which can be exploited by malicious people to conduct cross-site scripting and script insertion attacks.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/52655/sa23195.txt
Source: https://packetstormsecurity.com/files/52655/Secunia-Security-Advisory-23195.html