{"id":"GHSA-587p-w43q-4hjx","summary":"query-parser-string is vulnerable to Prototype Pollution","details":"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.","aliases":["CVE-2025-63704"],"modified":"2026-05-12T17:26:28.825256Z","published":"2026-05-07T18:30:40Z","database_specific":{"severity":"CRITICAL","github_reviewed":true,"github_reviewed_at":"2026-05-12T16:19:25Z","nvd_published_at":"2026-05-07T16:16:17Z","cwe_ids":["CWE-1321"]},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-63704"},{"type":"WEB","url":"https://github.com/victorteokw/query-string-parser/issues/3"},{"type":"WEB","url":"https://gist.github.com/6en6ar/d62f614dbb2b1032b5e45a56fe26ec8b"},{"type":"PACKAGE","url":"https://github.com/victorteokw/query-string-parser"},{"type":"WEB","url":"https://www.npmjs.com/package/query-string-parser?activeTab=readme"}],"affected":[{"package":{"name":"query-string-parser","ecosystem":"npm","purl":"pkg:npm/query-string-parser"},"versions":["1.0.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-587p-w43q-4hjx/GHSA-587p-w43q-4hjx.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}