novaestellar/novahaku · testing/hunt/hunt-cache-poison/SKILL.md

hunt-cache-poison skillB

hunt-cache-poison is agent-read markdown (skill) from novaestellar/novahaku: Hunting skill for cache poison vulnerabilities. Built from 10 public bug bounty reports including X-Forwarded-Host poisoning, X-HTTP-Method-Override / GCS cache, reflected→stored XSS via cache, classic Omer-Gil Web Cache Deception, Cloudflare Cache Deception Armor bypass, session-token cache deception, Akamai hop-by-hop smuggling → server-side edge poisoning, and Kettle's 2024 path-normalization WCD against Cloudflare/Fastly/GCP. Host/X-Forwarded-Host injection that reaches app logic (reset-link.

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 novaestellar/novahaku/hunt-cache-poison@git:20260910.546fe86
Exact content
mdr add novaestellar/novahaku/hunt-cache-poison@sha256:ceeaca5685c114ba

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_dg5e5h7kj3nqtotb.svg)](https://markdownregistry.com/a/art_dg5e5h7kj3nqtotb)

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Versions

versioncommittedcommitsizeaudit
git:20260910.546fe86 latest2026-09-10 546fe86 22,757 BB view · diff
git:20260903.29924dd2026-09-03 29924dd 22,769 BB view · diff
git:20260903.fa855c42026-09-03 fa855c4 22,740 BB view

Audit of the latest version

B  16 of 17 checks passed. Deterministic, no model, same answer every run.
  • fail: No script tag (matched: <script)
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (22757 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

Source

GitHub

novaestellar/novahaku · 19 stars · license none · pushed 2026-09-10 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_dg5e5h7kj3nqtotb
GET https://markdownregistry.com/api/v1/resolve?ref=novaestellar/novahaku/hunt-cache-poison
GET https://markdownregistry.com/api/v1/blob/ceeaca5685c114ba41511bc2c57f8f17d81c77892adbd07c68ac8e26b2beaf27