{"cve":"CVE-2025-63704","nvd":{"published":"2026-05-07T16:16:17.697","modified":"2026-06-17T09:53:24.057","status":"Deferred","description":"NPM package query-parser-string 1.0.0 is vulnerable to Prototype Pollution. The package does not properly sanitize user supplied query parameters and merges them to the newly created object.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-1321"],"references":["https://gist.github.com/6en6ar/d62f614dbb2b1032b5e45a56fe26ec8b","https://github.com/victorteokw/query-string-parser/issues/3","https://www.npmjs.com/package/query-string-parser?activeTab=readme"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:33:55.586217763+00:00"},"epss":{"cve":"CVE-2025-63704","score":0.00476,"percentile":0.41123,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-587p-w43q-4hjx","url":"https://osv.dev/vulnerability/GHSA-587p-w43q-4hjx","summary":"query-parser-string is vulnerable to Prototype Pollution","modified":"2026-05-12T17:26:28.825256Z","packages":[{"ecosystem":"npm","name":"query-string-parser","purl":"pkg:npm/query-string-parser","ranges":["1.0.0"],"fixed":[]}]}],"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."]}