name: qa-security description: Perform a security audit based on OWASP. Use when the user wants to verify security, look for vulnerabilities, or before a production deployment. allowed-tools:

Read
Grep
Glob
Bash context: fork model: opus argument-hint: "[scope-or-module]"

Security Audit

Objective

Identify security vulnerabilities based on OWASP Top 10.

Instructions

1. Automated scan

# npm dependency audit
npm audit --audit-level=moderate

# Secret search
npx secretlint "**/*"

# Static security analysis
npx eslint --plugin security src/

2. OWASP Top 10 Checklist

A01 - Broken Access Control

[ ] Authorization checks on every endpoint
[ ] No IDOR (direct access via predictable IDs)
[ ] CORS correctly configured
[ ] Principle of least privilege

A02 - Cryptographic Failures

[ ] Sensitive data encrypted (at rest + in transit)
[ ] No secrets in code
[ ] Secure hash algorithms (bcrypt, argon2)
[ ] TLS/HTTPS enforced

A03 - Injection

[ ] SQL: Parameterized queries / ORM
[ ] XSS: HTML output escaping
[ ] Command injection: No shell with user input
[ ] NoSQL: Query validation

A04 - Insecure Design

[ ] Server-side validation (not just client)
[ ] Rate limiting on sensitive endpoints
[ ] Environment separation

A05 - Security Misconfiguration

[ ] Security headers (CSP, X-Frame-Options)
[ ] No stack traces in production
[ ] Correct file permissions

A06 - Vulnerable Components

[ ] npm audit with no critical vulnerabilities
[ ] Dependencies maintained and up to date

A07 - Authentication Failures

[ ] Passwords hashed correctly
[ ] Protection against brute force
[ ] Secure sessions (httpOnly, secure, sameSite)

A08 - Data Integrity Failures

[ ] Validation of incoming data
[ ] Secure deserialization

A09 - Logging Failures

[ ] Logs of security events
[ ] No sensitive data in logs

A10 - SSRF

[ ] Validation of user URLs
[ ] Whitelist of allowed domains

3. Search patterns

# Potential secrets
grep -rn "password\s*=" --include="*.ts"
grep -rn "api_key\s*=" --include="*.ts"
grep -rn "secret\s*=" --include="*.ts"

# Potential SQL Injection
grep -rn "query.*\$\{" --include="*.ts"
grep -rn "execute.*\+" --include="*.ts"

# Potential XSS
grep -rn "innerHTML" --include="*.tsx"
grep -rn "dangerouslySetInnerHTML" --include="*.tsx"

# Dangerous eval
grep -rn "eval(" --include="*.ts"
grep -rn "new Function(" --include="*.ts"

4. Recommended security headers

// Express with Helmet
app.use(helmet({
  contentSecurityPolicy: {
    directives: {
      defaultSrc: ["'self'"],
      scriptSrc: ["'self'"],
      styleSrc: ["'self'", "'unsafe-inline'"],
      imgSrc: ["'self'", "data:", "https:"],
    }
  },
  hsts: { maxAge: 31536000, includeSubDomains: true }
}));

Expected output

## Security Report

### Summary
- **Overall risk level**: [Critical/High/Medium/Low]
- **Vulnerabilities found**: X
- **Vulnerable dependencies**: Y

### Critical vulnerabilities
| Severity | Category | File:Line | Description | Remediation |
|----------|----------|-----------|-------------|-------------|
| CRITICAL | A03 | auth.ts:45 | SQL injection | Parameterized query |

### Important vulnerabilities
[...]

### Priority recommendations
1. [Immediate action]
2. [Short term]
3. [Medium term]

### Dependencies to update
| Package | Version | Vulnerability | Severity |
|---------|---------|---------------|----------|
| lodash | 4.17.19 | Prototype pollution | High |

Rules

IMPORTANT: Check all 10 OWASP categories
IMPORTANT: Prioritize by severity
YOU MUST propose concrete remediations
NEVER ignore critical vulnerabilities

Think hard about every potential attack vector.

Audit de sécurité OWASP

Recommandé pour