SQL injection vulnerability in the display function in the Topics module for MAXdev MDPro (MD-Pro) 1.0.73 and 1.0.72, and possibly other versions before 1.076, allows remote attackers to execute arbitrary SQL commands via the topicid parameter in a display action, which is not properly handled in PNuserapi.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.