vuln-xxe

Test XML parsers for insecure external entity resolution using canary files.

Updated Jul 30, 2026
One-click install
npx skills add https://github.com/salmanabdurrahman/pi-pentest-agent --skill vuln-xxe
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: vuln-xxe
Source: https://github.com/salmanabdurrahman/pi-pentest-agent/tree/main/skills/vuln-xxe
Command: npx skills add https://github.com/salmanabdurrahman/pi-pentest-agent --skill vuln-xxe

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill provides a structured, safe, and authorized methodology for identifying XML external entity (XXE) injection vulnerabilities in web applications without risking data exposure or system instability.

Core Features & Use Cases

  • Safe Canary Testing: Uses non-sensitive canary files like /etc/hostname to confirm parser vulnerabilities without accessing sensitive system data.
  • OOB Detection: Supports blind XXE detection via DNS and HTTP callbacks to identify vulnerabilities where no direct output is returned.
  • Multi-Vector Analysis: Covers classic file-read, XInclude, and SVG-based XXE injection techniques.

Quick Start

Use the vuln-xxe skill to perform a safe canary file read test on the target XML endpoint identified in your scope.

Frequently Asked Questions about vuln-xxe

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I test for XML external entity injection safely without exposing sensitive data?▼

XML external entity (XXE) injection testing can be performed safely by using non-sensitive canary files like /etc/hostname to confirm parser vulnerabilities without accessing sensitive system data. This approach prevents data exposure while validating insecure entity resolution.

What is blind XXE detection and how does out-of-band monitoring work?▼

Blind XXE detection identifies vulnerabilities where no direct output is returned by using out-of-band (OOB) monitoring via DNS and HTTP callbacks. This technique confirms insecure XML entity resolution by observing external network interactions triggered by the parser.

How do I validate XML external entity vulnerabilities in SOAP APIs and SAML endpoints?▼

You validate XML external entity vulnerabilities in SOAP APIs and SAML endpoints by testing XML parsers for insecure entity resolution. This involves applying structured injection techniques to the XML-processing endpoints identified in your security assessment scope.

What vectors are used for XML external entity injection testing?▼

XML external entity injection testing uses multiple vectors including classic file-read, XInclude, and SVG-based injection techniques. These methods test XML parsers for insecure entity resolution across different XML-based formats processed by the target application.

Can I use canary file reads to confirm XML parser vulnerabilities?▼

Yes, you can use canary file reads to confirm XML parser vulnerabilities safely. By targeting non-sensitive files like /etc/hostname, you can verify insecure entity resolution and validate XML external entity vulnerabilities without risking system instability or data exposure.