NPM package query-parser-string 1.0.0 is vulnerable to Prototype Pollution.
Priority MEDIUM 49CWE-1321Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub.
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00476 41st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | query-string-parser (npm) | — | — | No fix listed | GHSA-587p-w43q-4hjx |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- query-string-parser (npm) Vendor— Affected — Fixed in — No fix listed GHSA-587p-w43q-4hjx
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-63704
- 2026-10-03 Alias added: GHSA-587p-w43q-4hjx
References
Sources
- CVE-2025-63704 · CVE Program
- CVE-2025-63704 · NVD
- FIRST EPSS
- GHSA-587p-w43q-4hjx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences