We take the security of True Valence Mapper seriously. If you have discovered a security vulnerability, please report it to us responsibly.

1. DO NOT open a public GitHub issue for security vulnerabilities
2. Email the repository owner directly through GitHub
3. Include detailed information about the vulnerability:
   • Type of vulnerability (XSS, injection, authentication bypass, etc.)
   • Steps to reproduce
   • Potential impact
   • Suggested fix (if available)

• Initial Response: Within 48 hours
• Status Update: Within 7 days
• Fix Timeline: Varies based on severity (critical issues prioritized)

This application implements comprehensive security measures:

• Centralized input validation module (input-validation.js)
• HTML tag stripping and special character sanitization
• Context-aware output encoding (HTML, SVG, text)
• Safe DOM manipulation (textContent over innerHTML)

• Person names: 50 character limit, alphanumeric + safe punctuation
• Map names: 100 character limit
• Trust scores: Numeric validation (0-3 range)
• JSON imports: Deep sanitization and structure validation

• Row Level Security (RLS) policies implemented
• User-based data isolation
• Anonymous authentication with proper scoping
• SQL injection prevention through parameterized queries

• Client-side validation before storage
• Server-side RLS enforcement
• Sanitization on data load/import
• URL validation (prevents javascript: and data: protocols)

• HTML/Script injection in person names
• SQL injection attempts in map names
• Malicious JSON imports
• SVG text injection
• URL-based injection attacks

Detailed security documentation is available in the docs/security/ directory:

• XSS Protection: SECURITY.md
• RLS Implementation: RLS-TESTING-PROCEDURE.md
• Security Analysis: CRITICAL-SECURITY-ANALYSIS.md
• Phase Reports:
  • PHASE-0-SECURITY-COMPLETION-REPORT.md
  • PHASE-0-VALIDATION-RESULTS.md

This implementation addresses:

• OWASP Top 10 (2021)
  • A03:2021 Injection
  • A07:2021 Cross-Site Scripting (XSS)
• CWE Standards
  • CWE-79: Improper Neutralization of Input During Web Page Generation
  • CWE-434: Unrestricted Upload of File with Dangerous Type

When contributing to this project:

1. Always use InputValidator for any user input
2. Never use innerHTML with user data (use textContent)
3. Validate on both client and server (defense in depth)
4. Test with malicious inputs before submitting PRs
5. Follow principle of least privilege in database policies

• Supabase: Backend as a Service (BaaS)
  • Authentication: Anonymous + future OAuth support
  • Database: PostgreSQL with RLS
  • Security: TLS encryption, secure API endpoints

This repository includes automated security checks:

• Weekly audits scan for hardcoded secrets
• SQL injection patterns checked in database files
• Dependency scanning (Dependabot enabled)
• Secret scanning (GitHub Advanced Security)

We appreciate responsible disclosure and will acknowledge security researchers who help improve the security of True Valence Mapper.

Last Updated: January 2025 Security Status: Production Ready Test Coverage: Comprehensive XSS and injection tests included