CVE-2026-42548

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Source
https://cve.org/CVERecord?id=CVE-2026-42548
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-42548.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-42548
Aliases
Published
2026-05-13T19:21:44.125Z
Modified
2026-05-18T06:00:14.302843956Z
Severity
  • 8.6 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N CVSS Calculator
Summary
Flight: Reflected XSS via unvalidated JSONP callback in Flight::jsonp()
Details

Flight is an extensible micro-framework for PHP. Prior to 3.18.1, Flight::jsonp() concatenates the ?jsonp= query parameter directly into an application/javascript response body without validating that the value is a legal JavaScript identifier. An attacker can inject arbitrary JavaScript that executes in the response origin, enabling reflected cross-site scripting. This vulnerability is fixed in 3.18.1.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42548.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-79"
    ]
}
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 
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.18.1"
        }
    ]
}

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/osv-test-cve-osv-conversion/osv-output/CVE-2026-42548.json"