Cross-site scripting (XSS) vulnerability in read_body.php for SquirrelMail 1.2.10, 1.2.9, and earlier allows remote attackers to insert script and HTML via the (1) mailbox and (2) passed_id parameters.
https://exchange.xforce.ibmcloud.com/vulnerabilities/10754
http://www.securityfocus.com/bid/6302
http://www.redhat.com/support/errata/RHSA-2003-042.html
http://www.debian.org/security/2002/dsa-220
http://secunia.com/advisories/8220
http://marc.info/?l=bugtraq&m=104004924002662&w=2
http://marc.info/?l=bugtraq&m=103911130503272&w=2