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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.

PUBLISHED Reserved 2025-10-27 | Published 2026-05-07 | Updated 2026-05-08 | Assigner mitre

References

www.npmjs.com/package/query-string-parser?activeTab=readme

github.com/victorteokw/query-string-parser/issues/3

gist.github.com/6en6ar/d62f614dbb2b1032b5e45a56fe26ec8b

cve.org (CVE-2025-63704)

nvd.nist.gov (CVE-2025-63704)

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