testing-for-host-header-injection

Host header injection testing involves sending crafted Host and proxy-forwarded headers like X-Forwarded-Host to observable endpoints to detect reflected values and suspected poisoning outcomes including password reset manipulation, cache poisoning, SSRF, and virtual host routing changes.

Password reset poisoning occurs when changing the Host or proxy-forwarded headers causes reset responses to include attacker-controlled hosts. You detect it by sending crafted headers to reset endpoints and reviewing the structured JSON report for malicious link generation.

Yes, the testing script requires the Python requests library to send crafted HTTP headers to target web applications and reverse proxies. You must have this dependency installed to execute the probes and generate the structured vulnerability report.

Yes, you can detect web cache poisoning and SSRF by probing backend request behavior and routing when the Host header is set to internal-looking values. The tool evaluates whether host-related headers influence cached responses or trigger internal service requests.

The best way to find virtual host routing manipulation is to probe reverse proxies and load balancers with crafted Host and Forwarded headers, observing whether backend request routing changes when assigned internal-looking values.

Host header injection testing requires authorized security testing of target web applications and their reverse proxies or load balancers. You must ensure explicit permission before sending crafted headers to probe SSRF and routing behavior, as it can alter backend states.