Security Checklist

Priority 2: XSS (Cross-Site Scripting)

• No innerHTML, document.write, eval(), or $.html() called with untrusted data
• Form field values never inserted directly into the DOM without sanitization
• jQuery selectors don't use user-supplied strings
• Contact form uses Netlify Forms built-in handling — no custom DOM injection

Priority 3: Netlify Functions

• HTTP method checked before any other processing
• JSON.parse(event.body) in try/catch — null body handled
• No raw Stripe error messages returned to client
• No dynamic require() with user-controlled paths
• No console.log of secret values or tokens
• Error responses use generic messages (no stack traces, no internal paths)

Priority 4: Information Disclosure

• No .env file committed (verify .gitignore includes .env)
• No debug HTML comments exposing architecture, credentials, or file paths
• No Stripe Price IDs or secret key fragments visible in HTML source
• package.json stripe version is current (check for known CVEs)

Priority 5: Form Security

• Contact form uses Netlify Forms (no custom server-side handler exposed)
• No hidden form fields that bypass business logic if manipulated
• No sensitive data in GET query parameters

Audit report format

## Security Audit Report

### Summary
Overall risk: LOW | MEDIUM | HIGH | CRITICAL

### Findings

#### 🔴 Critical
- [file:line] Vulnerability — Impact — Remediation

#### 🟠 High
- [file:line] Vulnerability — Impact — Remediation

#### 🟡 Medium
- [file:line] Vulnerability — Impact — Remediation

#### 🔵 Informational
- [file:line] Observation — Recommendation

### Sign-off
PASS | FAIL — [brief justification]

Sign-off criteria

• PASS: No Critical or High findings
• FAIL: Any Critical or High finding present