Preventing XML and LDAP Injection
Extend injection defense beyond SQL and commands to XML (XXE) and LDAP. Learn how untrusted input corrupts these interpreters and how to neutralize it.
Injection Beyond SQL
You have seen SQL, command, and XSS injection. Any interpreter that mixes untrusted input with structure is at risk. Two often-missed backend targets are XML parsers and LDAP directories.
What Is XXE
XML External Entity (XXE) injection abuses XML parsers that resolve external entities. An attacker defines an entity that reads a local file or hits an internal URL.
<!DOCTYPE x [ <!ENTITY xxe SYSTEM "file:///etc/passwd"> ]>
<data>&xxe;</data>All lessons in this course
- SQL Injection Prevention
- Command & Code Injection
- Cross-Site Scripting (XSS) in Backend
- Preventing XML and LDAP Injection