CVE-2025-63704

critical · 9.8

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.

9.8

CVSS

0.5%

EPSS (exploit prob.)

40th

EPSS percentile

2026-05-07

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2025-63704