Discover how a simple Host header tampering can expose private admin panels and critical internal services.
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Disclaimer:
The techniques described in this document are intended solely for ethical use and educational purposes. Unauthorized use of these methods outside approved environments is strictly prohibited, as it is illegal, unethical, and may lead to severe consequences.It is crucial to act responsibly, comply with all applicable laws, and adhere to established ethical guidelines. Any activity that exploits security vulnerabilities or compromises the safety, privacy, or integrity of others is strictly forbidden.
This vulnerability demonstrates a Server-Side Request Forgery (SSRF) attack vector, where Host header manipulation is exploited to bypass internal routing controls.
In this lab from PortSwigger, the backend uses the Host header to determine how to route requests. By modifying the Host value to mimic an internal IP (such as…