CVE-2026-42548: high-severity vulnerability in flightphp core
Flight: Reflected XSS via unvalidated JSONP callback in Flight::jsonp()
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.6epss 0.4%
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.
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 products
flightphp · coreRelated CVEs — flightphp core
In the same product, most dangerous first.
CVE-2014-125127HIGHDenial of Service (DoS) vulnerability in mikecao/flightEPSS 0.5%CVE-2026-42550HIGHFlight: SQL Injection via unvalidated identifiers in SimplePdo::insert / update / deleteEPSS 0.5%CVE-2026-42551HIGHFlight: HTTP method override enabled by default enables CSRF escalation and middleware bypass in flightphp/coreEPSS 0.4%CVE-2026-42552HIGHFlight: Sensitive information disclosure via default error handler in flightphp/coreEPSS 0.3%CVE-2026-42549MEDIUMFlight: Path traversal in `make:controller` CLI creates arbitrary directories outside project rootEPSS 0.2%