PHProjekt 2.0 through 3.1 relies on the $PHP_SELF variable for authentication, which allows remote attackers to bypass authentication for scripts via a request to a .php file with "sms" in the URL, which is included in the PATH_INFO portion of the $PHP_SELF variable, as demonstrated using "mail_send.php/sms".
Exploitability
AV:NAC:LAu:NImpact
C:PI:PA:P7.5/AV:N/AC:L/Au:N/C:P/I:P/A:P