We provide security updates for the following versions of LightningMD:

The LightningMD team takes security vulnerabilities seriously. If you discover a security vulnerability, please report it privately to help us resolve it quickly and responsibly.

Please do NOT report security vulnerabilities through public GitHub issues.

Instead, please use one of these methods:

1. GitHub Security Advisories (Preferred)

   • Go to Security Advisories
   • Click "Report a vulnerability"
   • Fill out the form with details

2. Email

   • Send an email to: security@lightning-md.org
   • Include "SECURITY" in the subject line

Please include the following information in your report:

• Description: A clear description of the vulnerability
• Impact: What the vulnerability allows an attacker to do
• Reproduction: Step-by-step instructions to reproduce the issue
• Affected Versions: Which versions of LightningMD are affected
• Environment: Platform, OS, browser (if applicable)
• Proof of Concept: Minimal code example demonstrating the vulnerability
• Suggested Fix: If you have ideas for how to fix the issue

Subject: SECURITY - XSS vulnerability in HTML rendering

Description:
LightningMD does not properly escape user input in HTML attributes, allowing XSS attacks.

Impact:
An attacker can inject malicious JavaScript that executes in users' browsers when they view the generated HTML.

Reproduction:
1. Create a markdown file with: [link](javascript:alert('XSS'))  
2. Convert to HTML with LightningMD
3. Open the HTML file in a browser
4. JavaScript executes when clicking the link

Affected Versions: 0.1.0 and earlier
Environment: All platforms, all browsers

• Acknowledgment: We aim to acknowledge receipt within 24 hours
• Initial Assessment: We will provide an initial assessment within 72 hours
• Status Updates: We will provide regular updates on our progress
• Resolution: We aim to resolve critical vulnerabilities within 7 days

LightningMD implements several security measures:

• HTML output is properly escaped to prevent XSS attacks
• Dangerous HTML tags and attributes are filtered
• URL validation prevents javascript: and data: URI schemes

• WebAssembly builds use security-focused compilation flags
• WASM modules run in sandboxed environments
• Memory safety is ensured through Rust's ownership system

• Regular security audits using cargo audit
• Automated dependency updates via Dependabot
• Minimal dependency tree to reduce attack surface

• Automated security scanning in all pull requests
• Secret scanning to prevent credential leaks
• Code signing for release artifacts

We are particularly interested in vulnerabilities related to:

• Cross-Site Scripting (XSS): Injection attacks through HTML output
• Code Injection: Arbitrary code execution vulnerabilities
• Path Traversal: Unauthorized file system access
• Denial of Service: Resource exhaustion attacks
• Memory Safety: Buffer overflows, use-after-free

• Information Disclosure: Unauthorized information access
• Privilege Escalation: Gaining higher permissions
• WASM Sandbox Escape: Breaking out of WebAssembly sandbox

• Dependency Vulnerabilities: Issues in third-party dependencies
• Configuration Issues: Insecure default configurations

• Validate input files from untrusted sources
• Use appropriate file permissions for output files
• Keep LightningMD updated to the latest version

• Validate markdown input from untrusted sources
• Sanitize HTML output if displaying user-generated content
• Use Content Security Policy (CSP) headers

• Enable security features in your configuration
• Validate all inputs before processing
• Handle errors appropriately to avoid information leaks

We follow responsible disclosure practices:

1. Private Disclosure: Report vulnerabilities privately first
2. Coordinated Fix: We work with reporters to develop fixes
3. Public Disclosure: Details are published after fixes are available
4. Credit: We credit security researchers (unless they prefer anonymity)

Published security advisories can be found at:

• GitHub Security Advisories
• CVE Database (for assigned CVEs)

We maintain a hall of fame for security researchers who have helped improve LightningMD's security:

No reports received yet - be the first!

For questions about this security policy, please contact:

• Email: security@lightning-md.org
• GitHub: @lightning-md/security-team

This security policy is effective as of [date] and may be updated periodically.