unboundcompute/security-agent-skills · skills/testing-request-smuggling/SKILL.md

testing-request-smuggling skillA

testing-request-smuggling is agent-read markdown (skill) from unboundcompute/security-agent-skills: Test whether a chain of HTTP servers disagrees about where one request ends and the next begins, letting an attacker smuggle a request past the front end into the back end. Covers front-end and back-end desync from conflicting length signals, connection-reuse poisoning, single-packet and timing detection, and adjacent boundary confusion where a proxy and origin parse framing differently. Use when reviewing a reverse proxy, load balancer, CDN, or any multi-hop HTTP path where two parsers sit in s.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add unboundcompute/security-agent-skills/testing-request-smuggling@git:20260816.e670f56
Exact content
mdr add unboundcompute/security-agent-skills/testing-request-smuggling@sha256:27919571575c2334

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_4maykiykljpcunaq.svg)](https://markdownregistry.com/a/art_4maykiykljpcunaq)

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Versions

versioncommittedcommitsizeaudit
git:20260816.e670f56 latest2026-08-16 e670f56 6,714 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (6714 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

unboundcompute/security-agent-skills · 5 stars · license MIT · pushed 2026-09-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_4maykiykljpcunaq
GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/testing-request-smuggling
GET https://markdownregistry.com/api/v1/blob/27919571575c233410f3aad4a763b7ea11f86d7897df92103cf64d2e6f7ba7d1

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.