Overview
Basic XXE focuses on an XML-processing workflow where parser behavior can be influenced by untrusted input.
This lab introduces XML External Entity Injection, where parser features such as external entity resolution can turn XML input into backend file or network access risk.
Security Impact
XXE can expose local files, trigger backend network requests, leak application data, or support denial-of-service conditions depending on parser configuration and surrounding infrastructure.
Vulnerability Scope
XML APIs, document upload flows, SOAP services, SAML integrations, import tools, and legacy enterprise applications are exposed when they parse untrusted XML with risky parser features enabled.
Lab Focus
The lab focuses on XML parser risk, why external entity resolution is dangerous, and how secure parser configuration supports safe structured document handling.