options_identities.php in SquirrelMail 1.4.4 and earlier uses the extract function to process the $_POST variable, which allows remote attackers to modify or read the preferences of other users, conduct cross-site scripting XSS) attacks, and write arbitrary files.
Multiple cross-site scripting (XSS) vulnerabilities in SquirrelMail 1.4.0 through 1.4.4 allow remote attackers to inject arbitrary web script or HTML via unknown attack vectors in (1) the URL or (2) an e-mail message.
ftpfile in the Vacation plugin 0.15 and earlier for Squirrelmail allows local users to execute arbitrary commands via shell metacharacters in a command line argument.
Directory traversal vulnerability in ftpfile in the Vacation plugin 0.15 and earlier for Squirrelmail allows local users to read arbitrary files via a .. (dot dot) in a get request.
viewcert.php in the S/MIME plugin 0.4 and 0.5 for Squirrelmail allows remote attackers to execute arbitrary commands via shell metacharacters in the cert parameter.
Cross-site scripting (XSS) vulnerability in the decoding of encoded text in certain headers in mime.php for SquirrelMail 1.4.3a and earlier, and 1.5.1-cvs before 23rd October 2004, allows remote attackers to execute arbitrary web script or HTML.
prefs.php in SquirrelMail before 1.4.4, with register_globals enabled, allows remote attackers to inject local code into the SquirrelMail code via custom preference handlers.
Cross-site scripting (XSS) vulnerability in webmail.php in SquirrelMail before 1.4.4 allows remote attackers to inject arbitrary web script or HTML via certain integer variables.
PHP remote file inclusion vulnerability in webmail.php in SquirrelMail before 1.4.4 allows remote attackers to execute arbitrary PHP code by modifying a URL parameter to reference a URL on a remote web server that contains the code.