views/Index.php in the Install module in vTiger 6.0 before Security Patch 2 does not properly restrict access, which allows remote attackers to re-install the application via a request that sets the X-Requested-With HTTP header, as demonstrated by executing arbitrary PHP code via the db_name parameter.

Multiple SQL injection vulnerabilities in vTiger CRM 5.0.0 through 5.4.0 allow remote attackers to execute arbitrary SQL commands via the (1) picklist_name parameter in the get_picklists method to soap/customerportal.php, (2) where parameter in the get_tickets_list method to soap/customerportal.php, or (3) emailaddress parameter in the SearchContactsByEmail method to soap/vtigerolservice.php; or remote authenticated users to execute arbitrary SQL commands via the (4) emailaddress parameter in the SearchContactsByEmail method to soap/thunderbirdplugin.php.