unboundcompute/security-agent-skills · skills/auditing-cors-and-cross-origin-trust/SKILL.md

auditing-cors-and-cross-origin-trust skillA

auditing-cors-and-cross-origin-trust is agent-read markdown (skill) from unboundcompute/security-agent-skills: Audit the code and configuration that decide cross-origin access, for trust a browser turns into a read of authenticated data. Covers a response that reflects an arbitrary request origin into the allow-origin header alongside allow-credentials, an allowlist that accepts the null origin, allowlist matching by prefix, suffix, substring, or an unanchored pattern that a lookalike origin satisfies, the origin header trusted as an authorization or request-forgery defense, and a cross-window message ha.

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/auditing-cors-and-cross-origin-trust@git:20260821.57dfaf1
Exact content
mdr add unboundcompute/security-agent-skills/auditing-cors-and-cross-origin-trust@sha256:b6f65d68497e0b4e

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_l6vro5sx57exdnn7.svg)](https://markdownregistry.com/a/art_l6vro5sx57exdnn7)

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Versions

versioncommittedcommitsizeaudit
git:20260821.57dfaf1 latest2026-08-21 57dfaf1 9,590 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 (9590 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_l6vro5sx57exdnn7
GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/auditing-cors-and-cross-origin-trust
GET https://markdownregistry.com/api/v1/blob/b6f65d68497e0b4ea48addf2fa430c725cd2bbd8edc1a7430ee9fb32b37fe93c

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