- A
Reflected XSS is a server-side vulnerability, while stored XSS is a client-side vulnerability
Why wrong: Both are client-side vulnerabilities (in the browser) arising from insufficient output encoding.
- B
Reflected XSS is non-persistent and requires user interaction, while stored XSS is persistent and can affect multiple users
Reflected XSS does not persist; it appears in the response of a crafted link. Stored XSS remains on the server and infects any user viewing the page.
- C
Reflected XSS only works with HTTP POST requests, while stored XSS works with GET requests
Why wrong: Reflected XSS can occur in both GET and POST requests. Stored XSS is independent of the request method.
- D
Reflected XSS is triggered by the server, while stored XSS is triggered by the client
Why wrong: Both are triggered by the client's browser. The difference lies in where the payload is stored.
Quick Answer
The answer is that reflected XSS is non-persistent and requires user interaction, while stored XSS is persistent and can affect multiple users. This distinction hinges on where the malicious script lives: reflected XSS is injected via the current request, such as a URL parameter, and the script reflects immediately in the server’s response, meaning it only impacts the individual who clicks the crafted link. In contrast, stored XSS saves the payload on the server—often in a database, forum post, or comment field—so the script executes every time any user loads the affected page, making it far more dangerous. On the Certified Ethical Hacker CEH exam, this difference tests your ability to identify attack vectors and assess impact; a common trap is confusing reflected XSS with server-side injection because both involve input, but remember that reflected XSS never persists on the server. For a quick memory tip, think “Reflect = Request, Store = Server” to keep the core difference straight.
CEH Web Application and Injection Attacks Practice Question
This CEH practice question tests your understanding of web application and injection attacks. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which of the following describes the difference between reflected and stored (persistent) cross-site scripting (XSS)?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Reflected XSS is non-persistent and requires user interaction, while stored XSS is persistent and can affect multiple users
Reflected XSS is injected via the current request (e.g., URL parameter) and the script reflects immediately in the response. Stored XSS is saved on the server (e.g., in a database) and executed when other users view the affected page.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Reflected XSS is a server-side vulnerability, while stored XSS is a client-side vulnerability
Why it's wrong here
Both are client-side vulnerabilities (in the browser) arising from insufficient output encoding.
- ✓
Reflected XSS is non-persistent and requires user interaction, while stored XSS is persistent and can affect multiple users
Why this is correct
Reflected XSS does not persist; it appears in the response of a crafted link. Stored XSS remains on the server and infects any user viewing the page.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Reflected XSS only works with HTTP POST requests, while stored XSS works with GET requests
Why it's wrong here
Reflected XSS can occur in both GET and POST requests. Stored XSS is independent of the request method.
- ✗
Reflected XSS is triggered by the server, while stored XSS is triggered by the client
Why it's wrong here
Both are triggered by the client's browser. The difference lies in where the payload is stored.
Common exam traps
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.
Trap categories for this question
Command / output trap
Both are client-side vulnerabilities (in the browser) arising from insufficient output encoding.
Detailed technical explanation
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the CEH exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which CEH exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Web Application and Injection Attacks — study guide chapter
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FAQ
Questions learners often ask
What does this CEH question test?
Web Application and Injection Attacks — This question tests Web Application and Injection Attacks — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Reflected XSS is non-persistent and requires user interaction, while stored XSS is persistent and can affect multiple users — Reflected XSS is injected via the current request (e.g., URL parameter) and the script reflects immediately in the response. Stored XSS is saved on the server (e.g., in a database) and executed when other users view the affected page.
What should I do if I get this CEH question wrong?
Identify which CEH exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more ways this is tested on CEH
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which TWO of the following are characteristics of stored (persistent) XSS?
easy- A.The attack requires the victim to click a crafted link
- B.The payload is reflected immediately in the response
- ✓ C.The malicious script is stored on the server (e.g., in a database)
- D.The attack only works if the victim is logged in
- ✓ E.The attack can affect multiple users without direct interaction
Why C: Stored XSS involves malicious script being permanently stored on the server and executed whenever the stored content is accessed. It does not require a crafted link, and it can affect multiple users.
Last reviewed: Jun 21, 2026
This CEH practice question is part of Courseiva's free EC-Council certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CEH exam.
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