HACKR.GG
00 — Overview

XML External Entity (XXE)

Learn how attackers abuse XML parsers to read server files, perform SSRF, and exfiltrate data — a vulnerability hiding in every API that accepts XML.

Intermediate·40 min·6 tasks
// By the end of this module
Understand how XXE arises from XML external entity processing
Read local files via XXE using file:// URIs
Perform blind XXE with out-of-band data exfiltration
Escalate XXE to SSRF to reach internal services