hunt-http-smuggling

hunt-http-smuggling is a Penetration testing & red team skill for AI agents, published by elementalsouls in the Claude-BugHunter repository on GitHub. Skillspace rates hunt-http-smuggling D (64/100) and it passed the safety scan; the rating is based on static analysis only.

Hunt HTTP request smuggling (CL.TE, TE.CL, H2.CL, H2.TE). Cause: front-end proxy and back-end server disagree on where one request ends and the next begins (Content-Length vs Transfer-Encoding header parsing inconsistency). CL.TE: front-end uses CL, back uses TE → smuggle by sending TE: chunked but with body that fits CL count. TE.CL: opposite. H2.CL: HTTP/2 downgrade, smuggle CL into HTTP/1.1 back-end. Detection tools: Burp HTTP Request Smuggler extension, smuggler.py, h2csmuggler. Confirm: time-delay technique (smuggled GET with 30s timeout) — if front-end returns slow on next victim request, smuggling works. Validate: cache poisoning chain (smuggle request that gets cached for victim), credential theft (smuggle X-Forwarded-For override that captures next user's cookies), bypass auth (smuggled internal-path request). Real paid examples from major CDN deployments. Use when hunting H1 paid programs running CDN+origin stacks, when targeting load balancer / WAF bypass.

Grade

D

Quality

64 / 100

Safety

Passed

GitHub stars

4,464

Unproven: rated by static analysis only, not yet compared head-to-head.

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