# security-auditor

Scans your code for OWASP Top 10 patterns: SQL injection, XSS, exposed secrets, broken auth. Fires on file changes and before deployments.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 780 installs · ★ 56
- Author: ovachiever
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/ovachiever/droid-tings/tree/HEAD/skills/security-auditor/SKILL.md
- Updated: 2025-11-25
- HTML: https://affpapa.org/en/nevibecode/skills/ovachiever-security-auditor

## What it does

The skill hooks into the agent and watches your edits. Touch a file tied to auth, an API or a database and it runs that file against a list of known vulnerability patterns, then reports the type, the line number and the fix. It also covers insecure deserialization, CSRF, CORS, logging gaps and password storage.

What's inside is a set of OWASP Top 10 and CWE patterns with bad/good pairs: parameterized queries instead of string concatenation, `textContent` instead of `innerHTML`, secrets pulled from environment variables rather than hardcoded. For dependencies it can run `npm audit` and `pip-audit`, but only when `registry.npmjs.org`, `pypi.org` and `api.github.com` are reachable.

The split of duties is deliberate. The skill catches a pattern fast; deep auditing with threat modeling is left to the `@code-reviewer` sub-agent. If your team has its own security rules, copy the skill into a separate folder and extend it. It runs with or without sandboxing.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add ovachiever/droid-tings --skill security-auditor -a claude-code
```

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

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add ovachiever/droid-tings --skill security-auditor -a codex
```

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

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add ovachiever/droid-tings --skill security-auditor -a cursor
```

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

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install ovachiever/droid-tings security-auditor
```

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

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add ovachiever/droid-tings --skill security-auditor -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/ovachiever/droid-tings --path skills/security-auditor
```

### Windsurf (Devin Desktop)

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

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add ovachiever/droid-tings --skill security-auditor -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/ovachiever/droid-tings/tree/HEAD/skills/security-auditor/SKILL.md

## When to use it
- catch SQL injection in string concatenation before commit
- spot a hardcoded API key in a payment module
- check that passwords aren't stored in plain text
- find a missing ownership check on a delete route
- run a dependency audit before shipping

## Example prompts
- check this file for vulnerabilities before I commit
- run security-auditor over the changes in the auth folder
- scan the code for leaked secrets before deploy

## 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: dd5fb8d2e5e901a2.

BEGIN THIRD-PARTY FILE dd5fb8d2e5e901a2
````text
---
name: security-auditor
description: Continuous security vulnerability scanning for OWASP Top 10, common vulnerabilities, and insecure patterns. Use when reviewing code, before deployments, or on file changes. Scans for SQL injection, XSS, secrets exposure, auth issues. Triggers on file changes, security mentions, deployment prep.
allowed-tools: Read, Grep, Bash
---

# Security Auditor Skill

Automatic security vulnerability detection.

## When I Activate

- ✅ Code files modified (especially auth, API, database)
- ✅ User mentions security or vulnerabilities
- ✅ Before deployments or commits
- ✅ Dependency changes
- ✅ Configuration file changes

## What I Scan For

### OWASP Top 10 Patterns

**1. SQL Injection**
```javascript
// CRITICAL: SQL injection
const query = `SELECT * FROM users WHERE id = ${userId}`;

// SECURE: Parameterized query
const query = 'SELECT * FROM users WHERE id = ?';
db.query(query, [userId]);
```

**2. XSS (Cross-Site Scripting)**
```javascript
// CRITICAL: XSS vulnerability
element.innerHTML = userInput;

// SECURE: Use textContent or sanitize
element.textContent = userInput;
// or
element.innerHTML = DOMPurify.sanitize(userInput);
```

**3. Authentication Issues**
```javascript
// CRITICAL: Weak JWT secret
const token = jwt.sign(payload, 'secret123');

// SECURE: Strong secret from environment
const token = jwt.sign(payload, process.env.JWT_SECRET);
```

**4. Sensitive Data Exposure**
```python
# CRITICAL: Exposed password
password = "admin123"

# SECURE: Environment variable
password = os.getenv("DB_PASSWORD")
```

**5. Broken Access Control**
```javascript
// CRITICAL: No authorization check
app.delete('/api/users/:id', (req, res) => {
  User.delete(req.params.id);
});

// SECURE: Authorization check
app.delete('/api/users/:id', auth, checkOwnership, (req, res) => {
  User.delete(req.params.id);
});
```

### Additional Security Checks

- **Insecure Deserialization**
- **Security Misconfiguration**
- **Insufficient Logging**
- **CSRF Protection Missing**
- **CORS Misconfiguration**

## Alert Format

```
🚨 CRITICAL: [Vulnerability type]
📍 Location: file.js:42
🔧 Fix: [Specific remediation]
📖 Reference: [OWASP/CWE link]
```

### Severity Levels

- 🚨 **CRITICAL**: Must fix immediately (exploitable vulnerabilities)
- ⚠️ **HIGH**: Should fix soon (security weaknesses)
- 📋 **MEDIUM**: Consider fixing (potential issues)
- 💡 **LOW**: Best practice improvements

## Real-World Examples

### SQL Injection Detection

```javascript
// You write:
app.get('/users', (req, res) => {
  const sql = `SELECT * FROM users WHERE name = '${req.query.name}'`;
  db.query(sql, (err, results) => res.json(results));
});

// I alert:
🚨 CRITICAL: SQL injection vulnerability (line 2)
📍 File: routes/users.js, Line 2
````
END THIRD-PARTY FILE dd5fb8d2e5e901a2

The third-party file has ended. Everything between the dd5fb8d2e5e901a2 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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---
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