CVE-2026-42548

high

Published 2026-05-06 · Modified 2026-05-14

CVSS v3

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CVSS v2

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VIR risk

8.0

Description

Flight has reflected XSS through an unvalidated JSONP callback in Flight::jsonp()

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.

Package impact

Ecosystem	Package	Vulnerable	Fixed
Packagist	flightphp/core	`<3.18.1`	`3.18.1`
COMPOSER	flightphp/core	`< 3.18.1`	`3.18.1`

References

CWEs

CWE-79

Verify integrity in audit chain (admin only). AS-IS.