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.
Details
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
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| flightphp/core | โ | 3.18.1 |
| unknown | โ | โ |
References
Similar Threats
- Medium CVE-2026-42549
- High CVE-2026-42550
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- High CVE-2026-42552
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