testing-for-xml-injection-vulnerabilities

name	testing-for-xml-injection-vulnerabilities
description	Test web applications for XML injection vulnerabilities including XXE, XPath injection, and XML entity attacks to identify data exposure and server-side request forgery risks. Use when testing web applications for xml injection vulnerabilities including xxe, xpath.
domain	cybersecurity
tags	["xml-injection","xxe","xpath-injection","xml-parsing","web-security","entity-injection","dtd-attack"]
subdomain	web-application-security
version	1.0
author	oyi77
license	Apache-2.0
nist_csf	["PR.PS-01","ID.RA-01","PR.DS-10","DE.CM-01"]

Testing For Xml Injection Vulnerabilities

Overview

Cybersecurity skill for testing for xml injection vulnerabilities. Follows industry best practices and security standards.

When to Use

Trigger phrases:

• "testing for xml injection vulnerabilities"

• "Test web applications for XML injection vulnerabilities including XXE, XPath inj"

• When testing applications that process XML input (SOAP APIs, XML-RPC, file uploads)

• During penetration testing of applications with XML parsers

• When assessing SAML-based authentication implementations

• When testing file import/export functionality that handles XML formats

• During API security testing of SOAP or XML-based web services

When NOT to Use

• When you lack proper authorization for testing
• For production systems without change management
• When the task requires legal or compliance expertise beyond technical scope

Prerequisites

• Burp Suite with XML-related extensions (Content Type Converter, XXE Scanner)
• XMLLint or similar XML validation tools
• Understanding of XML structure, DTDs, and entity processing
• Python 3.x with lxml and requests libraries
• Access to an out-of-band interaction server (Burp Collaborator, interact.sh)
• Sample XXE payloads from PayloadsAllTheThings repository

Workflow

# Example: IOC detection
import re

IOC_PATTERNS = {
    "ip": r"\b(?:\d{1,3}\.){3}\d{1,3}\b",
    "domain": r"\b[a-z0-9-]+\.[a-z]{2,}\b",
    "hash_md5": r"\b[a-f0-9]{32}\b",
    "hash_sha256": r"\b[a-f0-9]{64}\b",
}

def extract_iocs(text: str) -> dict:
    return {k: re.findall(v, text) for k, v in IOC_PATTERNS.items()}