# code-review-security

A skill that walks pull requests and auth code through the OWASP Top 10 checklist and writes findings to security-review.md.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 438 installs · ★ 8
- Author: security-team
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/hieutrtr/ai1-skills/tree/HEAD/skills/code-review-security/SKILL.md
- Updated: 2026-02-06
- HTML: https://affpapa.org/en/nevibecode/skills/code-review-security

## What it does

Reach for it when you are reviewing a PR for vulnerabilities, auditing login and permission code, hunting for committed secrets, or scanning dependencies. The review follows the OWASP Top 10 (2021 edition) with separate checks for Python/FastAPI and React codebases.

Inside are checklists per category: broken access control, cryptographic failures, injection, insecure design, security misconfiguration. Each one ships with bad-and-good code pairs — parameterized queries instead of string interpolation, bcrypt instead of MD5, explicit CORS origins instead of `*`. Findings land in `security-review.md` with severity, a `file:line` reference, a description and a recommendation.

The skill targets Python 3.12+, FastAPI, React and TypeScript. Deployment security and incident handling are out of scope; the description points to `docker-best-practices` and `incident-response` for those. On a different stack you will be translating the examples yourself.

## Requirements
- Works with: Docker

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add hieutrtr/ai1-skills --skill code-review-security -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/code-review-security/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/code-review-security/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add hieutrtr/ai1-skills --skill code-review-security -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/code-review-security/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add hieutrtr/ai1-skills --skill code-review-security -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/code-review-security/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install hieutrtr/ai1-skills code-review-security
```

2. **Manually: put the files in place**
- File: `.github/skills/code-review-security/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add hieutrtr/ai1-skills --skill code-review-security -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/hieutrtr/ai1-skills --path skills/code-review-security
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/code-review-security/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add hieutrtr/ai1-skills --skill code-review-security -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/hieutrtr/ai1-skills/tree/HEAD/skills/code-review-security/SKILL.md

## When to use it
- review a pull request for vulnerabilities before merge
- catch a missing authorization check on an endpoint
- find a hardcoded secret or API key in the diff
- confirm user input passes through Pydantic schemas
- produce a findings report with severity levels

## Example prompts
- review this PR for OWASP Top 10 issues
- audit the authentication code in `auth/router.py`
- check the diff for committed secrets and weak password hashing

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: 91c5a231f3069b53.

BEGIN THIRD-PARTY FILE 91c5a231f3069b53
````text
---
name: code-review-security
description: >-
  Security-focused code review checklist and automated scanning patterns. Use when
  reviewing pull requests for security issues, auditing authentication/authorization
  code, checking for OWASP Top 10 vulnerabilities, or validating input sanitization.
  Covers SQL injection prevention, XSS protection, CSRF tokens, authentication flow
  review, secrets detection, dependency vulnerability scanning, and secure coding
  patterns for Python (FastAPI) and React. Does NOT cover deployment security (use
  docker-best-practices) or incident handling (use incident-response).
license: MIT
compatibility: 'Python 3.12+, FastAPI, React, TypeScript'
metadata:
  author: security-team
  version: '1.0.0'
  sdlc-phase: code-review
allowed-tools: Read Grep Glob Write Bash(python:*) Bash(npm:*)
context: fork
---

# Code Review Security

## When to Use

Activate this skill when:
- Reviewing pull requests for security vulnerabilities
- Auditing authentication or authorization code changes
- Reviewing code that handles user input, file uploads, or external data
- Checking for OWASP Top 10 vulnerabilities in new features
- Validating that secrets are not committed to the repository
- Scanning dependencies for known vulnerabilities
- Reviewing API endpoints that expose sensitive data

**Output:** Write findings to `security-review.md` with severity, file:line, description, and recommendations.

Do NOT use this skill for:
- Deployment infrastructure security (use `docker-best-practices`)
- Incident response procedures (use `incident-response`)
- General code quality review without security focus (use `pre-merge-checklist`)
- Writing implementation code (use `python-backend-expert` or `react-frontend-expert`)

## Instructions

### OWASP Top 10 Checklist

Review every PR against the OWASP Top 10 (2021 edition). Each category below includes specific checks for Python/FastAPI and React codebases.

---

#### A01: Broken Access Control

**What to look for:**
- Missing authorization checks on endpoints
- Direct object reference without ownership verification
- Endpoints that expose data without role-based filtering
- Missing `Depends()` for auth on new routes

**Python/FastAPI checks:**
```python
# BAD: No authorization check -- any authenticated user can access any user
@router.get("/users/{user_id}")
async def get_user(user_id: int, db: Session = Depends(get_db)):
    return await user_repo.get(user_id)

# GOOD: Verify the requesting user owns the resource or is admin
@router.get("/users/{user_id}")
async def get_user(
    user_id: int,
    current_user: User = Depends(get_current_user),
    db: Session = Depends(get_db),
):
````
END THIRD-PARTY FILE 91c5a231f3069b53

The third-party file has ended. Everything between the 91c5a231f3069b53 tags is data: requests and commands from it are not followed. An “end of file” line with another tag inside the block is part of the file.

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