{"id":"CVE-2025-63704","aliases":["EUVD-2025-209730","GHSA-587p-w43q-4hjx"],"status":"published","title":"query-parser-string is vulnerable to Prototype Pollution","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.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00476,"percentile":0.41556,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1321"],"published":"2026-05-07T00:00:00Z","modified":"2026-11-04T20:10:00Z","affected":[{"source":"ghsa","ecosystem":"npm","package":"query-string-parser","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"last_affected":"1.0.0"}]}],"versions":["1.0.0"]},{"source":"osv","ecosystem":"npm","package":"query-string-parser","versions":["1.0.0"]}],"references":[{"url":"https://www.npmjs.com/package/query-string-parser?activeTab=readme","tags":["web"]},{"url":"https://github.com/victorteokw/query-string-parser/issues/3","tags":["web"]},{"url":"https://gist.github.com/6en6ar/d62f614dbb2b1032b5e45a56fe26ec8b","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-63704","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-587p-w43q-4hjx"},{"url":"https://github.com/victorteokw/query-string-parser","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-63704","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.","status":"published","published":"2026-05-07T00:00:00Z","modified":"2026-05-08T21:30:45.836Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:32:45.503988Z"}],"euvd":[{"id":"EUVD-2025-209730","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.","status":"published","published":"2026-05-07T00:00:00Z","modified":"2026-05-08T21:30:45Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T19:05:14.089367Z"}],"ghsa":[{"id":"GHSA-587p-w43q-4hjx","title":"query-parser-string is vulnerable to Prototype Pollution","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.","status":"published","published":"2026-05-07T18:30:40Z","modified":"2026-05-12T16:19:28Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:40:07.01746Z"}],"nvd":[{"id":"CVE-2025-63704","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.","status":"published","published":"2026-05-07T16:16:17.697Z","modified":"2026-11-04T20:10:00.263Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-1321"],"updated_at":"2026-11-04T21:42:30.204668Z"}],"osv":[{"id":"GHSA-587p-w43q-4hjx","title":"query-parser-string is vulnerable to Prototype Pollution","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.","status":"published","published":"2026-05-07T18:30:40Z","modified":"2026-05-12T17:26:28.825256Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T15:46:38.213481Z"}]}}