The proxy server feature in go-pear.php in PHP PEAR 0.2.2, as used in Apache2Triad, allows remote attackers to execute arbitrary PHP code by redirecting go-pear.php to a malicious proxy server that provides a modified version of Tar.php with a malicious extractModify function.

Session fixation vulnerability in Apache2Triad 1.5.4 allows remote attackers to hijack web sessions via the PHPSESSID parameter.

Cross-site request forgery (CSRF) vulnerability in Apache2Triad 1.5.4 allows remote attackers to hijack the authentication of authenticated users for requests that (1) add or (2) delete user accounts via a request to phpsftpd/users.php.

Cross-site scripting (XSS) vulnerability in Apache2Triad 1.5.4 allows remote attackers to inject arbitrary web script or HTML via the account parameter to phpsftpd/users.php.