unboundcompute/security-agent-skills · skills/hunting-xpath-and-xml-query-injection/SKILL.md

hunting-xpath-and-xml-query-injection skillA

hunting-xpath-and-xml-query-injection is agent-read markdown (skill) from unboundcompute/security-agent-skills: Hunt XPath and XQuery injection where untrusted input is concatenated into a query expression that is then evaluated against an XML document or an XML database, so the input changes the structure of the query rather than supplying a value. A predicate closed early and rewritten to always be true bypasses an authentication or authorization lookup, and a rewritten path or an injected union walks the document to read nodes the caller was never meant to reach, including blind boolean and out-of-band.

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/hunting-xpath-and-xml-query-injection@git:20260903.6dac719
Exact content
mdr add unboundcompute/security-agent-skills/hunting-xpath-and-xml-query-injection@sha256:d9630c25108469cf

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_ty4zgum5xc2trife.svg)](https://markdownregistry.com/a/art_ty4zgum5xc2trife)

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Versions

versioncommittedcommitsizeaudit
git:20260903.6dac719 latest2026-09-03 6dac719 9,522 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 (9522 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_ty4zgum5xc2trife
GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/hunting-xpath-and-xml-query-injection
GET https://markdownregistry.com/api/v1/blob/d9630c25108469cf19557bbf4afc59b53706b3392f608f9f7ce9d056ab37bd23

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