SQL injection vulnerability in models/Cart66Ajax.php in the Cart66 Lite plugin before 1.5.4 for WordPress allows remote authenticated users to execute arbitrary SQL commands via the q parameter in a promotionProductSearch action to wp-admin/admin-ajax.php.
Improper Neutralization of Special Elements used in an SQL Command The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.