Cloudanix VulnDB

CVE-2026-42551

High · 7.5

CVSS

7.5

EPSS

0.4%

Published

May 13, 2026

CISA due date

—

The record

Flight is an extensible micro-framework for PHP. Prior to 3.18.1, Request::getMethod() unconditionally honors the X-HTTP-Method-Override header and the $_REQUEST['_method'] parameter on any HTTP verb (including safe verbs such as GET), with no opt-in and no whitelist of permitted target methods. A GET request can silently become a DELETE or PUT, enabling CSRF escalation against destructive endpoints, bypass of middleware gated on unsafe verbs, and cache poisoning between CDN and origin. This vulnerability is fixed in 3.18.1.

Affected packages

Ecosystem Package Introduced Fixed

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