• ✅ Next.js updated to 15.4.5+ (CVE fixed)
• ✅ All dependencies pinned to specific versions
• ✅ Server-side authentication implemented
• ✅ Security headers configured
• ⚠️ xlsx package has known vulnerabilities (no fix available)

The xlsx package has known security issues:

• Prototype Pollution (GHSA-4r6h-8v6p-xvw6)
• ReDoS vulnerability (GHSA-5pgg-2g8v-p4x9)

Mitigation:

• Only use xlsx for trusted file uploads
• Validate and sanitize all Excel file inputs
• Consider alternative libraries if security is critical
• Restrict file upload access to authenticated admins only

• Never commit .env.local to version control
• Use strong, unique values for all secrets
• Rotate credentials regularly
• Use different credentials for dev/staging/production

• Enforce strong password policies
• Enable MFA for admin accounts in Supabase
• Regularly review user access logs
• Implement session timeout policies

• Enable Row Level Security (RLS) in production
• Use prepared statements (Supabase handles this)
• Regular backups (automated via Supabase)
• Monitor for suspicious queries

• Validate file types and sizes
• Scan uploaded files for malware
• Store files in Supabase Storage (not filesystem)
• Use signed URLs for sensitive content

• Rate limiting implemented via lib/rate-limiter.ts
• Input validation and sanitization
• CORS properly configured
• API routes protected by authentication

If you discover a security vulnerability:

1. DO NOT open a public issue
2. Email security concerns to: [your-security-email]
3. Include:
   • Description of the vulnerability
   • Steps to reproduce
   • Potential impact
   • Suggested fix (if any)

We will respond within 48 hours and work with you to address the issue.

• All environment variables set in production
• .env.local not committed to repository
• Strong passwords for all admin accounts
• MFA enabled for critical accounts
• RLS policies enabled in Supabase
• HTTPS enforced (automatic on Vercel)
• Security headers configured (done in middleware)
• Regular dependency updates scheduled
• Backup system tested and working
• Error logging configured (not exposing sensitive data)
• Rate limiting tested
• File upload restrictions in place

• Review authentication logs
• Check for failed login attempts
• Monitor error rates

• Update dependencies: npm update
• Review and rotate API keys if needed
• Test backup restoration process
• Review user access permissions

• Security audit of codebase
• Penetration testing
• Review and update security policies
• Update this document

For security-related questions: [your-contact-info]