CVE-2026-42551
HIGH EPSS 22.7%
Published May 13, 20261mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
Published May 13, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability None
Threat Intelligence
EPSS Exploit Probability
22.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-436
References 1
- github.com https://github.com/flightphp/core/security/advisories/GHSA-vxrr-w42w-w76g
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.