CVE-2026-42548

Flight (PHP micro-framework) contains a reflected XSS in Flight::jsonp() prior to version 3.18.1, where the ?jsonp= parameter is concatenated into a JavaScript response without validating the callback name. This allows an attacker to inject arbitrary JavaScript that executes in the response origi...

Cross-site Scripting (XSS)

Overview Affected versions of this package are vulnerable to Cross-site Scripting XSS via the Flight::jsonp process. An attacker can execute arbitrary JavaScript in the context of the response origin by supplying a crafted jsonp query parameter, which is concatenated directly into the JavaScript...

PT-2026-38270

Name of the Vulnerable Software and Affected Versions Flight versions prior to 3.18.1 Description The Flight::jsonp function concatenates the jsonp query parameter directly into an application/javascript response body without validating if the value is a legal JavaScript identifier. This allows a...

Mozilla: Cross-origin responses could be distinguished between script and non-script content-types

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes this flaw as follows: When importing resources using Web Workers, error messages would distinguish the difference between application/javascript responses and non-script responses. This could have been abused to learn...