Glossary

REMOTE FILE INCLUSION / RFI
defined.

A vulnerability allowing an attacker to include and execute remote files via vulnerable include statements — almost always resulting in immediate RCE.

A–Z

What is Remote File Inclusion (RFI)?

RFI is LFI’s more dangerous sibling: where LFI reads local files, RFI fetches and executes a remote file. PHP’s allow_url_include was a notorious source. Modern frameworks ship with this disabled by default.

Where this shows up.

See our web application penetration testing, API security testing, network penetration testing, and cloud security audit services for how we test for and defend against this class of issue.

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