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During a penetration test, a tester discovers a web application that reflects user input in the HTTP response without proper escaping or encoding. The input is not sanitized and is included in the page's HTML. Which type of vulnerability is most likely present?

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During a penetration test, a tester discovers a web application that reflects user input in the HTTP response without proper escaping or encoding. The input is not sanitized and is included in the page's HTML. Which type of vulnerability is most likely present?

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Answer choices

Why each option matters

Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.

A

Distractor review

SQL injection

SQL injection involves injecting SQL commands, not client-side scripts, and typically does not cause reflection of input in the HTTP response.

B

Best answer

Cross-Site Scripting (XSS)

Reflecting unsanitized user input in the HTTP response is a primary indicator of a reflected XSS vulnerability, allowing script injection.

C

Distractor review

Stored XSS

Stored XSS requires the injected script to be permanently stored on the server (e.g., in a database), which is not described in this scenario.

D

Distractor review

Cross-Site Request Forgery (CSRF)

CSRF exploits trust in a user's browser for unauthorized actions, not the reflection of input in responses.

Common exam trap

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Technical deep dive

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

KKey Concepts to Remember

  • Read the scenario before looking for a memorised answer.
  • Find the constraint that changes the correct option.
  • Eliminate answers that are true in general but not in this case.
  • Use explanations to understand the rule behind the answer.

TExam Day Tips

  • Underline the problem statement mentally.
  • Watch for words such as best, first, most likely and least administrative effort.
  • Review why wrong options are wrong, not only why the correct option is correct.

Related practice questions

Related PT0-002 practice-question pages

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More questions from this exam

Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.

Question 1

A penetration tester is writing the executive summary for a report. The client's CEO needs to understand the business impact of a critical SQL injection vulnerability. Which of the following should the tester include?

Question 2

A penetration tester has gained a low-privileged shell on a Linux server. During enumeration, the tester discovers a binary with the SUID bit set that belongs to root and is known to have a buffer overflow vulnerability. What is the MOST effective next step to escalate privileges?

Question 3

A penetration tester is performing passive reconnaissance against a target domain. Which of the following resources can be used to gather information about the target without directly sending packets to the target's network? (Select two.) (Choose 2.)

Question 4

A penetration tester has obtained a TGT from a domain controller by cracking the krbtgt hash. Which attack can the tester now perform to gain persistent administrative access to any resource in the domain?

Question 5

A penetration tester is writing the executive summary for the final report. The CEO needs to understand the overall risk level and the business impact of the findings. Which of the following should be included in the executive summary?

Question 6

A penetration tester is writing the executive summary of a penetration test report. Which of the following elements is MOST important to include for a non-technical audience?

FAQ

Questions learners often ask

What does this PT0-002 question test?

Read the scenario before looking for a memorised answer.

What is the correct answer to this question?

The correct answer is: Cross-Site Scripting (XSS) — This scenario describes a classic Cross-Site Scripting (XSS) vulnerability, where an attacker can inject client-side scripts into web pages viewed by other users. Stored XSS requires persistence on the server, SQL injection targets databases, and CSRF relies on forged requests. Reflected XSS is the direct result of unsanitized input being reflected back immediately.

What should I do if I get this PT0-002 question wrong?

Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.

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