Input Validation — CompTIA PenTest+ (PT0-002) Practice Questions
Input validation is the practice of verifying that data supplied by a user or external system conforms to expected formats, types, and lengths before it is processed by an application. Failures in input validation are the root cause of a broad class of vulnerabilities including SQL injection, XSS, command injection, and buffer overflows. On the PT0-002 exam, candidates must recognize how insufficient input validation creates exploitable attack vectors during web and application testing, and understand both client-side and server-side validation requirements when evaluating an application's security posture.
Free questions on input validation
During a web application assessment, you identify that the application does not validate user input on a form field. Which of the following vulnerabilities is MOST likely to result?
Free question · medium · full answer + explanation
More input validation questions in the full bank
- Which vulnerability allows attackers to bypass client-side input validation? Unlock answer & explanation →
- How should API parameter validation be tested for security? Unlock answer & explanation →
- A tester identifies that a web application reflects user input back to the browser without encoding. Which attack is this vulnerability MOST likely to enable? Unlock answer & explanation →