SQL injection vulnerability in application/controllers/invoice.php in NeoInvoice might allow remote attackers to execute arbitrary SQL commands via vectors involving the sort_col variable in the list_items function, a different vulnerability than CVE-2012-3477.
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.