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CVE-2026-42548

Flight: Reflected XSS via unvalidated JSONP callback in Flight::jsonp() PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
flightphp / coreaffected < 3.18.1

CWE

CWE-79

References

ADP enrichment

CISA-ADP

No English description supplied.