Prototype pollution in js-data
Priority MEDIUM 46CWE-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 · NVD. Fix status from CNA and GitHub.
Summary
All versions of package js-data are vulnerable to Prototype Pollution via the deepFillIn and the set functions. This is an incomplete fix of [CVE-2020-28442](https://snyk.io/vuln/SNYK-JS-JSDATA-1023655).
Why it matters now
EPSS 0.02168 82nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | js-data | all versions | — | No fix listed | CNA |
| — | js-data (npm) | up to 3.0.10 | — | No fix listed | GHSA-c6h4-gc3f-hgjq |
- js-data Vendor— Affected all versions Fixed in — No fix listed CNA
- js-data (npm) Vendor— Affected up to 3.0.10 Fixed in — No fix listed GHSA-c6h4-gc3f-hgjq
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-23574
- 2026-10-03 Alias added: GHSA-c6h4-gc3f-hgjq
References
More Js-data vulnerabilities
- TI-2020-17259 Prototype pollution in js-data CVSS 3.1CRITICAL 9.8
Sources
- CVE-2021-23574 · CVE Program
- CVE-2021-23574 · NVD
- FIRST EPSS
- GHSA-c6h4-gc3f-hgjq · GitHub Advisory Database · CC BY 4.0
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