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Security Policy

📋 Security Overview

CVAudioStudio takes security seriously and implements several measures to protect user data and API credentials. This document outlines our security practices and how to report vulnerabilities.

🔒 Security Practices

Credential Management

  • Environment Variables Only: All sensitive credentials (API keys) are stored exclusively in environment variables
  • No Hardcoded Secrets: No API keys, passwords, or secrets are hardcoded in the application
  • .gitignore Protection: The .env file is included in .gitignore to prevent accidental commits
  • Template Files: .env.example provides a template without exposing actual credentials

API Key Handling

  • OpenAI API keys are loaded using python-dotenv
  • Keys are never logged or displayed in error messages
  • API keys are used only for making authorized requests to OpenAI services
  • No credentials are stored in application logs or generated files

Input Validation

  • Filename Sanitization: Custom filenames are sanitized to prevent path traversal attacks
  • Parameter Validation: All user inputs (voice, model, speed, format) are validated against allowed values
  • Length Limits: Text input is limited to 5000 characters to prevent abuse
  • Type Checking: All inputs are type-checked before processing

Error Handling

  • Detailed error messages are disabled in production (showErrorDetails = false)
  • Sensitive information is never exposed in error messages
  • Errors are logged locally without exposing credentials

Dependency Management

  • All dependencies are listed in requirements.txt
  • Regular updates are recommended to patch security vulnerabilities
  • Use pip-audit to check for known vulnerabilities: 
    pip install pip-audit
pip-audit

🛡️ Best Practices for Users

For Development

  1. Never Commit .env File

    # Verify .env is in .gitignore
git check-ignore -v .env

  2. Use Separate API Keys

    • Use different API keys for development and production
    • Create API keys with appropriate permissions only
    • Rotate keys periodically

  3. Check for Secrets Before Committing

    # Search for potential secrets
git grep -i "sk-" .
git grep -i "api_key" .
git grep -i "password" .

  4. Review Git History

    # Check if .env was ever committed
git log --all -- .env

For Deployment

  1. Streamlit Cloud

    • Add API keys in "Secrets" section of deployment settings
    • Never hardcode keys in the application
    • Use environment variables in production

  2. Docker Deployment

    • Use Docker secrets or environment files
    • Never include .env in Docker images
    • Use read-only mounts for environment files

  3. Monitor API Usage

🔍 Security Checklist

Before deploying or sharing your application:

  • .env file is in .gitignore
  • .env is not tracked by git (git status)
  • No API keys in git history
  • .env.example exists without real credentials
  • Dependencies are up-to-date (pip-audit passes)
  • Error details are disabled in production
  • Input validation is implemented
  • API usage is being monitored

🐛 Reporting Vulnerabilities

If you discover a security vulnerability, please report it responsibly.

How to Report

  1. Do NOT create a public issue
  2. Send an email to: your.email@example.com
  3. Include in your report:
    • Description of the vulnerability
    • Steps to reproduce
    • Potential impact
    • Suggested fix (if known)

Response Timeline

  • Initial Response: Within 48 hours
  • Investigation: Within 7 days
  • Resolution: As soon as possible, based on severity

What to Expect

  • Confirmation of receipt within 48 hours
  • Regular updates on the investigation status
  • Credit in the release notes (if desired)
  • Coordination on disclosure timeline

🔐 Security Features

Implemented

✅ Environment variable usage for credentials
✅ Input validation and sanitization
✅ Error message filtering in production
✅ Path traversal prevention
✅ Parameter validation
✅ Dependency tracking in requirements.txt
✅ .gitignore protection for sensitive files

Future Improvements

🔄 Rate limiting for API calls
🔄 Request signing verification
🔄 Audit logging for sensitive operations
🔄 Webhook security validation
🔄 HTTPS enforcement

📚 Additional Resources

📞 Contact

For security-related questions or concerns:

Last Updated: 2026-04-02
Version: 1.0.0