We release patches for security vulnerabilities. The following versions are currently being supported with security updates:

Please do not report security vulnerabilities through public GitHub issues.

Instead, please report them to the security team by sending an email to the project maintainers. Include the following details:

1. Type of vulnerability (e.g., XSS, SQL Injection, etc.)
2. Location of the vulnerability in the code (file and line number if possible)
3. Description of how the vulnerability could be exploited
4. Proof of concept (if available)
5. Impact of the vulnerability (severity level)
6. Suggested fix (if you have one)

Please allow adequate time for the team to address the issue before public disclosure. We generally aim to:

• Acknowledge receipt of your report within 5 business days
• Provide an estimated timeline for a fix within 10 business days
• Release a patched version as soon as possible

When using PDF Form Filler, please follow these security best practices:

• Always validate and sanitize user inputs before processing
• Use secure file upload mechanisms with proper file type validation
• Implement rate limiting on upload endpoints
• Set reasonable file size limits

• Verify PDF files come from trusted sources
• Be cautious with encrypted PDFs from unknown sources
• Consider scanning uploaded files with antivirus software
• Don't process PDFs from untrusted users in production without additional safeguards

• Use strong database passwords
• Enable database encryption if handling sensitive data
• Restrict database access to necessary services only
• Regularly backup the database
• Use environment variables for database credentials (never hardcode)

• Enable CSRF protection (already implemented via Flask-WTF)
• Use HTTPS in production
• Set secure headers (Content-Security-Policy, X-Frame-Options, etc.)
• Implement proper authentication and authorization
• Keep all dependencies up to date
• Use environment variables for sensitive configuration

Store the following securely:

SESSION_SECRET=your-secure-random-secret-key
LOG_LEVEL=INFO  # Set to DEBUG only in development

Never commit these values to version control.

We regularly update dependencies to patch known vulnerabilities. To check for vulnerable dependencies:

pip install safety
safety check

All code changes go through review to catch potential security issues. Please ensure your contributions:

1. Follow secure coding practices
2. Include proper error handling
3. Don't introduce new vulnerabilities
4. Are tested for security implications

If you have suggestions for improving security (without disclosing vulnerabilities), please:

1. Open an issue labeled as "security"
2. Describe the improvement and its benefits
3. Provide examples if possible

This project aims to follow OWASP Top 10 security best practices and uses industry-standard libraries for PDF handling and encryption.

For security-related inquiries, please reach out to the project maintainers through:

• Email: [maintainer-email]
• Security Advisory: GitHub Security Advisory

We appreciate the security research community and thank those who report vulnerabilities responsibly.