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.
CVE-2025-63704
Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-07. NVD baseline CVSS 9.8; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(medium)
- EPSS
- 37.8%
- KEV
- Not listed
Published
May 7, 2026
Last Modified
May 8, 2026
Advisory Details (2)
Auto-updated May 9, 2026Public disclosure for security issue in query-string-parser npm package through version 1.0.0 · GitHub
https://gist.github.com/6en6ar/d62f614dbb2b1032b5e45a56fe26ec8bPatch Availability(1)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| npm | query-string-parser | — | ghsa |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| query-string-parser | 1.0.0 | — | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 75× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 283 total refreshes for this CVE.
- 2026-07-12 05:46 UTCEPSS rescore
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- 2026-06-27 14:33 UTCGHSA enrichment
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- 2026-06-12 21:46 UTCGHSA enrichment
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- 2026-06-10 17:25 UTCGHSA enrichment
Related CVEs(same CWE)
Same CWE
10 shownCWE-1321
Frequently asked(5)
What is CVE-2025-63704?
When was CVE-2025-63704 disclosed?
Is CVE-2025-63704 actively exploited?
What is the CVSS score of CVE-2025-63704?
How do I remediate CVE-2025-63704?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-63704
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