{"cve":"CVE-2023-37899","nvd":{"published":"2023-07-19T20:15:10.807","modified":"2026-06-17T06:08:51.600","status":"Modified","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. There is no known workaround for this vulnerability.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-754"],"references":["https://github.com/feathersjs/feathers/blob/crow/CHANGELOG.md#4518-2023-07-19","https://github.com/feathersjs/feathers/blob/dove/CHANGELOG.md#508-2023-07-19","https://github.com/feathersjs/feathers/pull/3241","https://github.com/feathersjs/feathers/pull/3242","https://github.com/feathersjs/feathers/security/advisories/GHSA-hhr9-rh25-hvf9"],"products":["feathersjs:feathers"],"source":"nvd","synced_at":"2026-10-19T21:38:35.729974749+00:00"},"epss":{"cve":"CVE-2023-37899","score":0.01188,"percentile":0.67913,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-hhr9-rh25-hvf9","url":"https://osv.dev/vulnerability/GHSA-hhr9-rh25-hvf9","summary":"Feathers socket handler allows abusing implicit toString","modified":"2023-11-08T04:13:03.762779Z","packages":[{"ecosystem":"npm","name":"@feathersjs/socketio","purl":"pkg:npm/%40feathersjs/socketio","ranges":["<4.5.18"],"fixed":["4.5.18"]},{"ecosystem":"npm","name":"@feathersjs/socketio","purl":"pkg:npm/%40feathersjs/socketio","ranges":[">=5.0.0 <5.0.8"],"fixed":["5.0.8"]},{"ecosystem":"npm","name":"@feathersjs/transport-commons","purl":"pkg:npm/%40feathersjs/transport-commons","ranges":["<4.5.18"],"fixed":["4.5.18"]},{"ecosystem":"npm","name":"@feathersjs/transport-commons","purl":"pkg:npm/%40feathersjs/transport-commons","ranges":[">=5.0.0 <5.0.8"],"fixed":["5.0.8"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}