The upload-git-issues CLI tool is designed with security as a top priority. This document outlines all security measures implemented to protect users' data and systems.

• Read-Only Access: Only reads CSV files, never writes or deletes files
• Path Traversal Protection: Prevents ../ attacks and directory traversal
• File Type Validation: Only accepts .csv files
• Size Limits: Maximum file size of 50MB to prevent DoS attacks
• No System Access: Cannot access system directories or sensitive files

• HTTPS Only: All network requests use HTTPS encryption
• Domain Whitelist: Only connects to api.github.com and github.com
• No Arbitrary Requests: Cannot make requests to unauthorized domains
• Request Logging: All network activity is logged (without sensitive data)

• Token Validation: GitHub tokens are validated before use
• No Token Storage: Tokens are never saved to disk or cached
• Data Sanitization: All CSV input is sanitized to prevent injection
• Sensitive Data Masking: Tokens and sensitive data are masked in logs
• Input Validation: All user inputs are validated and sanitized

• Trusted Packages Only: Uses only well-known, trusted npm packages
• Minimal Dependencies: Keeps dependency footprint small
• Regular Updates: Dependencies are regularly updated for security patches
• No Malicious Code: All dependencies are audited for security

Run the built-in security audit:

npm run security-audit

This performs:

• Source code analysis for dangerous patterns
• Dependency security verification
• Network request validation
• Security feature verification

Users can verify security by:

1. Reviewing Source Code: All source code is available on GitHub
2. Checking Dependencies: Review package.json for trusted packages only
3. Network Monitoring: Monitor network requests (only to GitHub)
4. File System Monitoring: Verify only CSV file reads occur

To ensure transparency, here's what the tool cannot and will not do:

• Cannot write files to your system
• Cannot delete or modify existing files
• Cannot access files outside the specified CSV
• Cannot access system directories (/etc, /usr, etc.)
• Cannot execute other programs or scripts

• Cannot connect to arbitrary websites
• Cannot send data to unauthorized servers
• Cannot perform DNS lookups for malicious domains
• Cannot download or upload files (except GitHub API calls)

• Cannot store your GitHub token permanently
• Cannot log sensitive information
• Cannot send your data to third parties
• Cannot access environment variables or system secrets

// Example: Safe file path validation
const validation = validateSafeFilePath(filePath);
if (!validation.safe) {
  throw new Error(`Security validation failed: ${validation.reason}`);
}

Protects Against:

• Path traversal attacks (../../../etc/passwd)
• Access to system files
• Large file DoS attacks
• Non-CSV file processing

// Example: Token sanitization
const validation = sanitizeGitHubToken(token);
if (!validation.valid) {
  throw new Error(`Invalid token: ${validation.reason}`);
}

Protects Against:

• Invalid token formats
• Token injection attacks
• Accidental token logging
• Token persistence

// Example: CSV data sanitization
const sanitizedData = sanitizeCsvData(rawData);

Protects Against:

• Formula injection (=cmd|'/c calc'!A0)
• Script injection in CSV cells
• Malicious CSV payloads

// Example: Network security
const validation = validateNetworkRequest(url);
if (!validation.allowed) {
  throw new Error(`Unauthorized request: ${validation.reason}`);
}

Protects Against:

• Requests to malicious domains
• Data exfiltration attempts
• SSRF (Server-Side Request Forgery)
• Man-in-the-middle attacks (HTTPS only)

# Run security audit
npm run security-audit

# Test with verbose security logging
npm run dev example.csv --dry-run --verbose

# Test file validation
npm run test-parser example.csv

The tool includes tests for:

• ✅ Valid CSV files are accepted
• ✅ Invalid file types are rejected
• ✅ Path traversal attempts are blocked
• ✅ Large files are rejected
• ✅ Invalid tokens are rejected
• ✅ CSV injection is prevented
• ✅ Network requests are validated

Latest security audit results:

🔍 Source Code Security Audit
✅ No dangerous patterns found in source code

📦 Dependency Security Audit  
✅ All dependencies are trusted

🌐 Network Security Audit
✅ All network requests are to authorized domains

🛡️ Security Features Summary
✅ File System Security: Read-only, validated access
✅ Network Security: HTTPS-only, whitelisted domains
✅ Data Handling Security: Sanitized, validated, masked
✅ Dependency Security: Trusted packages only

🎉 SECURITY AUDIT PASSED

If you discover a security vulnerability:

1. DO NOT open a public issue
2. Report security issues via GitHub's private vulnerability reporting
3. Include detailed reproduction steps
4. Allow 48 hours for initial response

Before using this tool, verify:

• Source code is available and auditable on GitHub
• Security audit passes (npm run security-audit)
• Only trusted dependencies in package.json
• Network monitoring shows only GitHub API calls
• File system monitoring shows only CSV file reads
• No sensitive data in logs or output

Security is continuously monitored:

• Dependencies are updated regularly
• Security patches are applied promptly
• New security features are added as needed
• Community security reports are addressed quickly

• GitHub Token Security Best Practices
• CSV Security Guidelines
• Node.js Security Best Practices

Last Updated: September 2025
Security Audit Version: 1.0.0