◉ Official answer
# [Community Challenge] Vault Warden: Object IDOR & Header Manipulation
Author: Community Member · Difficulty: Level 4 · Mode: Flag & Responsible Disclosure
Scope & Rules of Engagement
- In Scope: Vault note retrieval endpoint, X-User-Identity header, item numeric ID queries.
- Out of Scope: Production Orbyt database, host operating system, rate limit exhaustion.
Test inside the isolated Cyber Lab sandbox: Open Sandbox
> Remember: Submit your technical findings directly to the author through the Proving Grounds report form. Do not disclose 0-day exploits publicly in this thread.