SQL injection vulnerability in authlogin.php in Cacti 0.8.5a allows remote attackers to execute arbitrary SQL commands and bypass authentication via the (1) username or (2) password parameters.

Cacti 0.8.6e and earlier does not perform proper input validation to protect against common attacks, which allows remote attackers to execute arbitrary commands or SQL by sending a legitimate value in a POST request or cookie, then specifying the attack string in the URL, which causes the getrequestvar function to return the wrong value in the $REQUEST variable, which is cleansed while the original malicious $GET value remains unmodified, as demonstrated in (1) graphimage.php and (2) graph.php.

config.php in Cacti 0.8.6e and earlier allows remote attackers to set the nohttpheaders switch, then modify session information to gain privileges and disable the use of addslashes to conduct SQL injection attacks.

PHP file inclusion vulnerability in topgraphheader.php in Cacti 0.8.6d and possibly earlier versions allows remote attackers to execute arbitrary PHP code via the config[librarypath] parameter.

SQL injection vulnerability in configsettings.php for Cacti before 0.8.6e allows remote attackers to execute arbitrary SQL commands via the id parameter.

PHP remote file inclusion vulnerability in configsettings.php in Cacti before 0.8.6e allows remote attackers to execute arbitrary PHP code via the config[includepath] parameter.