High severityPHPFile InclusionHIGH confidence

File Inclusion Interpolated

A request parameter is interpolated or concatenated into an include/require path (CWE-98).

Standards mapping

CWE: CWE-98: Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
OWASP Top 10: A03:2021 - Injection
OWASP ASVS: V12.3.2 (L1)

Vulnerable vs. safe

Flagged by this check

include("pages/" . $_GET['page'] . ".php");

Passes - the safe pattern

include("pages/" . basename("home") . ".php");

Why it matters & how to fix it

A request parameter is interpolated or concatenated into an include/require path (CWE-98). This is directly exploitable file inclusion. Validate against an allow-list of permitted files and strip path components with basename().

References

https://cwe.mitre.org/data/definitions/98.html

Rule ID integsec-php-file-inclusion-interpolated - engine: Opengrep - license: MIT - Copyright (c) IntegSec Inc.

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