About XXE.page

Mission

Our mission is to provide security professionals, developers, and researchers with authoritative, actionable guidance on XXE vulnerabilities. By offering clear explanations, real-world examples, and language-specific secure configurations, we aim to reduce the prevalence of XXE vulnerabilities in production systems.

What We Cover

• Fundamentals: XML, DTD, and entity processing mechanisms
• Vulnerability Types: Classic XXE, Blind XXE, Parameter Entities, File Upload XXE
• Attack Vectors: File Disclosure, SSRF, DoS, RCE Escalation
• Language-Specific Prevention: Java, .NET, PHP, Python, Node.js, Ruby, Go
• Application Contexts: SOAP, SAML, JSON-to-XML, SVG, Document Parsers
• Testing & Remediation: Methodologies, payload design, secure patterns

Responsible Disclosure

All content on this site is provided for educational and defensive purposes only. The attack techniques and payloads described should only be used for:

• Authorized penetration testing with explicit permission
• Security research in controlled environments
• Defensive security and vulnerability remediation
• CTF competitions and security training exercises

Technology Stack

XXE.page is built with modern web technologies:

• Next.js 16 - React framework with static site generation
• Tailwind CSS - Utility-first CSS framework
• React Syntax Highlighter - Code syntax highlighting
• Dark Mode Support - Comfortable reading in any lighting

Contributing

We welcome contributions from the security community! If you've discovered errors, have suggestions for improvements, or want to contribute new content, please visit our GitHub repository.

Acknowledgments

This project builds upon the foundational work of the security community, including OWASP, PortSwigger, and countless security researchers who have documented and shared their knowledge about XXE vulnerabilities.