{"api_version":"1","generated_at":"2026-07-18T17:56:39+00:00","cve":"CVE-2023-37899","urls":{"html":"https://cve.report/CVE-2023-37899","api":"https://cve.report/api/cve/CVE-2023-37899.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-37899","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-37899"},"summary":{"title":"CVE-2023-37899","description":"Feathersjs is a framework for creating web APIs and real-time applications with TypeScript or JavaScript. Feathers socket handler did not catch invalid string conversion errors like `const message = ${{ toString: '' }}` which would cause the NodeJS process to crash when sending an unexpected Socket.io message like `socket.emit('find', { toString: '' })`.  A fix has been released in versions 5.0.8 and 4.5.18. Users are advised to upgrade. 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