CVE-2026-42551
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
13/05/2026
Last modified:
14/05/2026
Description
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.
Impact
Base Score 3.x
7.50
Severity 3.x
HIGH