SQL injection vulnerability in bb_admin.php in miniBB 2.2a allows remote attackers to execute arbitrary SQL commands via the whatus parameter in a searchusers2 action. NOTE: it was later reported that other versions before 3.0.1 are also vulnerable.
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.