Multiple SQL injection vulnerabilities in the Mingle Forum plugin 1.0.32.1 and other versions before 1.0.33 for WordPress might allow remote authenticated users to execute arbitrary SQL commands via the (1) memberid or (2) groupid parameters in a removemember action or (3) id parameter to fs-admin/fs-admin.php, or (4) edit_forum_id parameter in an edit_save_forum action to fs-admin/wpf-edit-forum-group.php.
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.