Improper input validation

Improper input validation^[1] or unchecked user input is a type of vulnerability in computer software that may be used for security exploits.^[2] This vulnerability is caused when "[t]he product does not validate or incorrectly validates input that can affect the control flow or data flow of a program."^[1]

Examples include:

• Buffer overflow
• Cross-site scripting
• Directory traversal
• Null byte injection
• SQL injection
• Uncontrolled format string