Masterclass Tutorial: Bug Bounty

The classic "Change the number in the URL" bug.

How to find it: Go to your profile: site.com/profile?user_id=1001 Change it to 1000. If you see another user's data: Bounty.

Masterclass Tutorial Action:

Title: [Type of Bug] - [Endpoint] - [Impact] Bad: "XSS on login" Good: "Stored XSS in Admin Panel leading to Account Takeover of Super Admin"

1. Description (Plain English): "The 'Display Name' field in the profile settings does not sanitize JavaScript. When an admin views the user list, their browser executes the code." bug bounty masterclass tutorial

2. Steps to Reproduce (Screenshots or Video):

3. Impact (Criticality):

4. Remediation:

Most of your first bounties will come from the OWASP Top 10. We will focus on the four most common (and profitable) bugs. The classic "Change the number in the URL" bug