CVE-2026-42551— Flight: HTTP method override enabled by default enables CSRF escalation and middleware bypass in flightphp/core
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-42551
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Flight: HTTP method override enabled by default enables CSRF escalation and middleware bypass in flightphp/core
Source: NVD (National Vulnerability Database)
Vulnerability 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 $_REQUEST['_method'] parameter on any HTTP verb (including safe verbs such as GET), with no opt-in and no whitelist of permitted target methods. A GET request can silently become a DELETE or PUT, enabling CSRF escalation against destructive endpoints, bypass of middleware gated on unsafe verbs, and cache poisoning between CDN and origin. This vulnerability is fixed in 3.18.1.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
解释冲突
Source: NVD (National Vulnerability Database)
Vulnerability Title
Flight 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Flight是Mike Cao个人开发者的一个PHP微框架。 Flight 3.18.1之前版本存在安全漏洞，该漏洞源于Request::getMethod()无条件接受X-HTTP-Method-Override标头和$_REQUEST[ _method ]参数，可能导致CSRF升级、中间件绕过和缓存投毒。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-42551
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-42551
请登录查看更多情报信息。
- https://github.com/flightphp/core/security/advisories/GHSA-vxrr-w42w-w76gx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-42551
Same Patch Batch · flightphp · 2026-05-13 · 5 CVEs total
| CVE-2026-42550 | 8.8 HIGH | Flight: SQL Injection via unvalidated identifiers in SimplePdo::insert / update / delete |
| CVE-2026-42552 | 7.5 HIGH | Flight: Sensitive information disclosure via default error handler in flightphp/core |
| CVE-2026-42549 | 4.4 MEDIUM | Flight: Path traversal in `make:controller` CLI creates arbitrary directories outside proj |
| CVE-2026-42548 | Flight: Reflected XSS via unvalidated JSONP callback in Flight::jsonp() |
IV. Related Vulnerabilities
Same product: core
- CVE-2026-45158
OPNsense: Command Injection via Attacker-Controlled DHCP Con - CVE-2026-44194
OPNsense: RCE on user managment - CVE-2026-44195
OPNsense: Authentication lockout bypass - CVE-2026-44193
OPNsense: RCE via XMLRPC endpoint using `opnsense.restore_co - CVE-2026-42552
Flight: Sensitive information disclosure via default error h
Same vendor: flightphp
- CVE-2026-42552
Flight: Sensitive information disclosure via default error h - CVE-2026-42550
Flight: SQL Injection via unvalidated identifiers in SimpleP - CVE-2026-42549
Flight: Path traversal in `make:controller` CLI creates arbi - CVE-2026-42548
Flight: Reflected XSS via unvalidated JSONP callback in Flig - CVE-2014-125127
Denial of Service (DoS) vulnerability in mikecao/flight
Same weakness: CWE-436
- CVE-2026-44576
Next.js: Cache poisoning in React Server Component responses - CVE-2026-42273
Heimdall: Case-sensitive host matching may lead to policy by - CVE-2026-42272
Heimdall: Case-sensitive handling of URL-encoded slashes may - CVE-2026-30246
github.com/gofiber/fiber/v3 cache middleware can mix respons - CVE-2026-6322
fast-uri vulnerable to host confusion via percent-encoded au
V. Comments for CVE-2026-42551
No comments yet