vulnerability-scan SKILL.md skillA

vulnerability-scan from ymd38/dev-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add ymd38/dev-skills/vulnerability-scan@git:20261029.8abbb70

Pins git:20261029.8abbb70 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
ymd38/dev-skills
Path
skills/vulnerability-scan/SKILL.md
Versions recorded
8
Latest version
git:20261029.8abbb70, committed Oct 29, 2026
First version recorded
Feb 19, 2026
Size
23,234 bytes
Repository stars
7
License
MIT

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, CSRF, missing server-side validation, authentication-flow and anti-automation gaps, and hardcoded secrets or PII exposure. Triggers on requests like "security scan", "vulnerability check", "audit security", "find vulnerabilities…

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file 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.**

---

## 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

The exact contents, by fingerprint
mdr add ymd38/dev-skills/vulnerability-scan@sha256:32622b9eb6267085

The line at the top of this page pins the label git:20261029.8abbb70, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

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

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 8 versions of this file, between Feb 19, 2026 and Oct 29, 2026, about one every 36 days.

versioncommittedcommitsizeaudit
git:20261029.8abbb70 latest2026-10-29 8abbb70 23,234 BA view · diff
git:20261022.df01f2d2026-10-22 df01f2d 22,961 BA view · diff
git:20261022.56a94be2026-10-22 56a94be 21,736 BA view · diff
git:20261013.21c69e62026-10-13 21c69e6 13,942 BA view · diff
git:20260919.20d77cb2026-09-19 20d77cb 13,426 BA view · diff
git:20260411.6bfab752026-04-11 6bfab75 13,419 BA view · diff
git:20260406.4f7fa432026-04-06 4f7fa43 12,448 BA view · diff
git:20260219.6f4c0aa2026-02-19 6f4c0aa 12,448 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the 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 (23234 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 · 7 stars · license MIT · pushed 2026-11-05 · 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/32622b9eb6267085eef76750bf183836a2efa3327e21f22c0422c03d6acd9154

Your AI assistant 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.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in ymd38/dev-skills

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