What is XML External Entities (XXE)?

PUBLISHED:

February 21, 2022

BY:

Abhay Bhargav

Ideal for

Developer

Security Engineer

Pentester

‍Security Engineer Interview Questions - What is XML External Entities (XXE)?

Never be caught tongue-tied in an Application Security Engineer Interview. In this video Abhay Bhargav explores the popular Security Engineer Interview question from Glassdoor and Indeed "What is XXE?"

#XXE is a key vulnerability in OWASP (Open Web Application Security Project) Top 10 and is a serious vulnerability that can have devastating impacts against your Web Application or Web Service. XXE can result in Local-File Include, Remote File Include, Remote Code Execution, Server-Side Request Forgery or #SSRF and Denial of Service.

Abhay explores XXE in the form of an offensive and defensive demo directly from AppSecEngineer's Learning Path "Application Security"

Abhay Bhargav

Blog Author

Abhay builds AI-native infrastructure for security teams operating at modern scale. His work blends offensive security, applied machine learning, and cloud-native systems focused on solving the real-world gaps that legacy tools ignore. With over a decade of experience across red teaming, threat modeling, detection engineering, and ML deployment, Abhay has helped high-growth startups and engineering teams build security that actually works in production, not just on paper.

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What is XML External Entities (XXE)?

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