CVE-2025-63704CRITICAL 9.8EPSS p37.3%

CVE-2025-63704CVE-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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.48% probability of exploitation · percentile 37.3% · 2026-06-19T12:03:05Z
Published2026-05-07
Last modified2026-05-08

Underlying weaknesses· 1

CWE-1321

References

  1. https://gist.github.com/6en6ar/d62f614dbb2b1032b5e45a56fe26ec8b
  2. https://github.com/victorteokw/query-string-parser/issues/3
  3. https://www.npmjs.com/package/query-string-parser?activeTab=readme

1

TypeTargetConfidenceTier
WeaknessImproperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')cwe-13210%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2025-63703
CVE
CVE-2025-63706
CVE
CVE-2025-61140
CVE
CVE-2026-45302
CVE
CVE-2026-46510
CVE
CVE-2026-33994
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.