Secunia Security Advisory – Debian has issued an update for squirrelmail. This fixes some vulnerabilities, which can be exploited by malicious people to conduct cross-site scripting, session fixation, and phishing attacks.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/77689/sa35140.txt
Source: https://packetstormsecurity.com/files/77689/Secunia-Security-Advisory-35140.html