Individual skill
testing-for-host-header-injection
Test web applications for HTTP Host header injection vulnerabilities to identify password reset poisoning, web cache poisoning, SSRF, and virtual host routing manipulation risks.
internal/tools/skills/data/web-application-security/testing-for-host-header-injection/SKILL.md
Source commit d42f381ad34843e71a42658e5c57290c713e85af
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- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- Yes
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
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Repository context
- Repository stars (not skill ratings)
- 1,320
- Repository last updated
- Nov 8, 2026
- License
- Apache-2.0
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- cybersecurity Repository topic
- security Repository topic
- bug-bounty Repository topic
- automation Repository topic
- autonomous-pentesting Repository topic
- ai-agent Repository topic
- ai-security Repository topic
- ethical-hacking Repository topic
- golang Repository topic
- penetration-testing Repository topic
- host-header-injection Declared skill tag
- password-reset-poisoning Declared skill tag
- cache-poisoning Declared skill tag
- virtual-host Declared skill tag
- web-security Declared skill tag
- header-manipulation Declared skill tag
- ssrf Declared skill tag
- testing Derived category
- security Derived category
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# Testing for Host Header Injection
## When to Use
- When testing password reset functionality for token theft via host manipulation
- During assessment of web caching behavior influenced by Host header values
- When testing virtual host routing and server-side request processing
- During penetration testing of applications behind reverse proxies or load balancers
- When evaluating SSRF potential through Host header manipulation
## Critical: Payload Matrix and Bypasses (checklist-derived)
### Headers to try (one per request, then in combination)
```
Host: attacker.com