AI security lab · Ai Security

HTML Injection via Chat Response

The support chatbot's HTML responses are rendered directly in the portal without sanitization. Craft prompts that cause the bot to emit malicious HTML that executes in other users' browsers.

beginnerPro labLLM05 Improper Output Handling
Reward
50 XP
Time
10 to 20 minutes
Solved by
2 learners
Start lab

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Part of QbitDojo Pro. Free accounts include 10 labs to start with.

What you will practice

Technique

Unsafe Render Chain

OWASP LLM Top 10 (2025)

LLM05 Improper Output Handling

MITRE ATLAS

LLM Indirect Prompt Injection

Initial Access

How QbitDojo labs work

  1. Step 1

    A live AI target

    Each lab is a real language model with its own instructions, guardrails and a secret flag it must protect.

  2. Step 2

    You attack it

    Talk to it like a red teamer would. Craft prompts, chain techniques and use hints if you get stuck.

  3. Step 3

    Capture the flag

    Get the model to reveal the flag to solve the lab, earn XP and climb the leaderboard.

  4. Step 4

    Then defend it

    In labs with Defense Mode, write the hardened system prompt that blocks the attack you just used.