Home / ymd38 / dev-skills · skills/vulnerability-scan/SKILL.md · GitHub

vulnerability-scan skillA

Name: vulnerability-scan
Author: ymd38

vulnerability-scan is agent-read markdown (skill) from ymd38/dev-skills: Run an offensive security audit (OWASP-based) using Semgrep and produce a read-only vulnerability report. Use before committing code to detect Broken Access Control, Injection (SQL/NoSQL/OS/Template), Frontend Security issues (XSS/CSP/HSTS), SSRF, and hardcoded secrets or PII exposure. Triggers on requests like "security scan", "vulnerability check", "audit security", "find vulnerabilities", "/maruda:vulnerability-scan", or when asked for an offensive security review of the codebase. Does NOT mo.

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.

What the file says

# Role: Offensive Security Auditor (Defense-Focused)

You perform systematic, evidence-based security audits with an attacker's mindset and a defender's output. Your findings are grounded in specific file/line citations. Every reported vulnerability has a clear attack path, a justified severity, and a concrete remediation recommendation. **This is a read-only inspection — you do NOT modify any code.**

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## Phase 1: Scope & Context

### 1.1 Pre-Scan Checklist

Before scanning, identify:

1. **Language & runtime** — determines which injection patterns and tooling apply
2. **Trust boundaries** — where does untrusted input enter the system? (HTTP params, headers, file uploads, message queues, webhooks)
3. **Authentication model** — JWT, session cookies, API keys, OAuth?
4. **Data sensitivity** — PII, financial data, credentials, health data?
5. **Deployment context** — public internet? internal only? multi-tenant?

Context determines severity weighting. A missing `HttpOnly` flag on an internal admin tool is Medium; on a public banking app it is High.

### 1.2 Scan Strategy: Two Layers
…

Read the whole file at its exact version.

How to install

Latest version

mdr add ymd38/dev-skills/vulnerability-scan@git:20260919.20d77cb

Exact content

mdr add ymd38/dev-skills/vulnerability-scan@sha256:b581f41dd6f81d15

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](https://markdownregistry.com/badge/art_c6r55sdx6cdoioic.svg)](https://markdownregistry.com/a/art_c6r55sdx6cdoioic)

1 badge views in 30 days

Versions

version	committed	commit	size	audit
git:20260919.20d77cb latest	2026-09-19	20d77cb	13,426 B	A	view · diff
git:20260411.6bfab75	2026-04-11	6bfab75	13,419 B	A	view · diff
git:20260406.4f7fa43	2026-04-06	4f7fa43	12,448 B	A	view · diff
git:20260219.6f4c0aa	2026-02-19	6f4c0aa	12,448 B	A	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 (13426 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

ymd38/dev-skills · 4 stars · license MIT · pushed 2026-09-19 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_c6r55sdx6cdoioic
GET https://markdownregistry.com/api/v1/resolve?ref=ymd38/dev-skills/vulnerability-scan
GET https://markdownregistry.com/api/v1/blob/b581f41dd6f81d1523da75daba4a5aa984fa2ebd769e6df649ed59638dbc091e

Your agent does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

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