SQL injection vulnerability in the category file in modules.php in the Emporium 2.3.0 and earlier module for PHP-Nuke allows remote attackers to execute arbitrary SQL commands via the category_id parameter.
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.