CVE-2026-42551

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Source
https://cve.org/CVERecord?id=CVE-2026-42551
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42551.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-42551
Aliases
Published
2026-05-13T19:23:27Z
Modified
2026-10-21T02:57:51Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
Flight: HTTP method override enabled by default enables CSRF escalation and middleware bypass in flightphp/core
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-436"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42551.json"
}
References

Affected packages

Git / github.com/flightphp/core

Affected ranges

Type
GIT
Repo
https://github.com/flightphp/core
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
b8dd23aaa828cb289fa3c84e75b2a3717cab50b0
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "3.18.1"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "3.18.1"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

Affected versions

v1.*
v1.0
v1.1
v1.1.10
v1.1.5
v1.2
v1.2.13
v1.2.14
v1.2.15
v1.2.17
v1.2.18
v1.2.19
v1.2.20
v1.2.21
v1.2.22
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.3.4
v1.3.5
v1.3.7
v1.3.8
v1.3.9
v2.*
v2.0.0
v2.0.1
v3.*
v3.0.0
v3.0.1
v3.0.2
v3.1.0
v3.1.1
v3.10.0
v3.10.1
v3.11.0
v3.11.1
v3.12.0
v3.13.0
v3.13.1
v3.14.0
v3.15.0
v3.15.1
v3.15.2
v3.15.3
v3.16.0
v3.16.1
v3.17.0
v3.17.1
v3.17.2
v3.17.3
v3.17.4
v3.18.0
v3.2.0
v3.3.0
v3.4.0
v3.4.1
v3.4.2
v3.5.0
v3.5.2
v3.5.3
v3.6.0
v3.6.1
v3.6.2
v3.7.0
v3.7.1
v3.7.2
v3.8.0
v3.8.1
v3.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42551.json"