Host Header Injection Uncovered: Real-World Examples and Mitigation Tactics

Host Header Injection Uncovered: Real-World Examples and Mitigation Tactics

 

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Host Header Injection (HHI) is a lesser-known but dangerous web vulnerability that occurs when a web application improperly uses the value of the Host HTTP header to generate dynamic content, perform redirects, or make security decisions. This opens doors for phishing, cache poisoning, password reset hijacking, and more.