CVE-2026-42548
UNKNOWN
NVD
CVSS Score
0
Severity
UNKNOWN
Published
May 13, 2026
Vendor
unknown
Description
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.