SquirrelMail: Multiple cross site scripting issues

Multiple cross-site scripting XSS vulnerabilities in SquirrelMail before 1.4.18 and NaSMail before 1.7 allow remote attackers to inject arbitrary web script or HTML via vectors involving 1 certain encrypted strings in e-mail headers, related to contrib/decryptheaders.php; 2 PHPSELF; and 3 the que...