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CVE-2026-42548

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:fbfc0637f3c61c5d630f9d7220fccf5d80df5f47f495762782dee0513e51b1c8
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"core","vendor":"flightphp","versions":[{"status":"affected","version":"< 3.18.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:83a7980a2dfcb1f53a36c075d766b4f724a1dabedfb6ca73960f1bb2896fe1f6 · sha256:9ae89c37827733bc… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.6,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:83a7980a2dfcb1f53a36c075d766b4f724a1dabedfb6ca73960f1bb2896fe1f6 · sha256:9ae89c37827733bc… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:83a7980a2dfcb1f53a36c075d766b4f724a1dabedfb6ca73960f1bb2896fe1f6 · sha256:9ae89c37827733bc… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/flightphp/core/security/advisories/GHSA-fcx8-ph5r-mxr4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:83a7980a2dfcb1f53a36c075d766b4f724a1dabedfb6ca73960f1bb2896fe1f6 · sha256:9ae89c37827733bc… · /containers/adp/0/references/0
{"name":"https://github.com/flightphp/core/security/advisories/GHSA-fcx8-ph5r-mxr4","tags":["x_refsource_CONFIRM"],"url":"https://github.com/flightphp/core/security/advisories/GHSA-fcx8-ph5r-mxr4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:83a7980a2dfcb1f53a36c075d766b4f724a1dabedfb6ca73960f1bb2896fe1f6 · sha256:9ae89c37827733bc… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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