Broken Access Control via Overprivileged Public API Key — How I Accessed 100+ User IDs, Search…

📰 Medium · LLM

Learn how a public chatbot API key with excessive privileges led to a security breach, allowing access to over 100 user IDs and search functionality, and understand the importance of proper access control in API key management.

intermediate Published 29 Apr 2026
Action Steps
  1. Identify public API keys with excessive privileges
  2. Review and restrict API key access to necessary endpoints
  3. Implement proper access control and authentication mechanisms
  4. Regularly audit and monitor API key usage
  5. Limit API key privileges to prevent unauthorized access
Who Needs to Know This

Developers, security engineers, and DevOps teams can benefit from this lesson to ensure proper access control and API key management, preventing similar security breaches in their own systems.

Key Insight

💡 Proper access control and API key management are crucial to preventing security breaches and protecting sensitive user data.

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🚨 Broken Access Control: A public chatbot API key with too much power led to a security breach! 🚨 Learn from this mistake and ensure proper API key management to prevent similar breaches. #APIsecurity #accesscontrol
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