PHP Improper Input Validation Vulnerability - CVE-2007-3799
The session_start function in ext/session in PHP 4.x up to 4.4.7 and 5.x up to 5.2.3 allows remote attackers to insert arbitrary attributes into the session cookie via special characters in a cookie that is obtained from (1) PATH_INFO (2) the session_id function and (3) the session_start function which are not encoded or filtered when the new session cookie is generated a related issue to CVE-2006-0207.