---
title: "Exposed API Documentation"
canonical: "https://kb.cynergy.app/space/MD/1243480092/Exposed%20API%20Documentation"
format: markdown
---
**What is Exposed API Documentation?**

API documentation provides instructions on how to interact with an Application Programming Interface (API). It usually includes details about the API's functions, parameters, return values, and authentication methods. When this documentation is publicly accessible without proper security measures, it becomes "exposed API documentation."

**Security Risks of Exposed API Documentation:**

1. **Information Leakage:** Exposed documentation can reveal sensitive information about the API's structure, endpoints, and data models. This information can be exploited by attackers to identify vulnerabilities and craft targeted attacks.
2. **Increased Attack Surface:** Detailed documentation can provide attackers with a roadmap to the API's functionalities, making it easier for them to discover and exploit vulnerabilities.
3. **Data Breaches:** If the documentation reveals sensitive data such as API keys, authentication tokens, or database credentials, attackers can directly access and compromise sensitive data.
4. **Denial-of-Service (DoS) Attacks:** API documentation can reveal information about rate limits and other security measures. Attackers can use this knowledge to bypass these protections and launch DoS attacks.
5. **Business Logic Attacks:** By understanding the API's logic and workflows through the documentation, attackers can manipulate the API to perform unauthorized actions or gain access to sensitive information.

**Mitigating the Risks:**

1. **Restrict Access:** Limit access to API documentation to authorized personnel only. Implement authentication and authorization mechanisms to control who can view the documentation.
2. **Sanitize Documentation:** Remove sensitive information from the documentation, such as API keys, authentication tokens, and internal implementation details.
3. **Use a Dedicated Documentation Portal:** Host API documentation on a separate, secure portal with access controls and monitoring capabilities.
4. **Regularly Update Documentation:** Keep the documentation up-to-date and ensure it accurately reflects the current state of the API, including security updates and patches.
5. **Security Testing:** Conduct regular security testing and vulnerability assessments to identify and address any potential weaknesses in the API and its documentation.
6. **Use API Gateways:** Implement API gateways to enforce security policies, control access, and protect against attacks.