Lab 6
Level 1 - Beginner
Source Code Comment Leakage Lab
Level 1 Client-Side Security simulation: learn how shipped frontend comments can reveal internal routes, features, or operational notes.
Beginner
Client-Side Security • 20 min
Learning Objectives
This lab is a controlled simulation only. No real backend or dangerous code execution is used.
Objective 1
Inspect a fake frontend code snippet and notice that comments may expose information beyond the rendered UI.
Objective 2
Identify the internal path leaked through a developer note.
Objective 3
Understand why comments in shipped code should be reviewed before production deployment.
Challenge Area
Use the input fields below to safely simulate the vulnerable behavior.
Leaked Internal Path
Fake Frontend Code Snippet
// TODO: remove before production
// admin panel: /beta-admin
const showBanner = true;
Submitted path: (none yet)
Result Panel
Review the fake frontend code snippet and enter the internal path leaked by the developer comment.
Hints
Reveal them progressively if you get stuck.
Click the hint button to reveal progressive guidance.