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CVE-2025-63704 — Vulnerability in query-string-parser — CVE Details

CRITICAL

query-parser-string is vulnerable to Prototype Pollution

Published May 7, 2026Updated May 12, 2026Source: osv

Summary

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.

Advisory Timeline

  • First published May 7, 2026 (158 days ago).
  • Last revised May 12, 2026 — 5 days after initial publication.

Affected Packages (1)

Affects 1 ecosystem: npm (1).

PackageEcosystemAffectedFixed In
query-string-parser
npm
1.0.0No fix available

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-1321
    Prototype PollutionMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

References

Frequently Asked Questions

What is CVE-2025-63704?
query-parser-string is vulnerable to Prototype Pollution This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2025-63704?
CVE-2025-63704 affects query-string-parser. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2025-63704 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-587p-w43q-4hjx

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