Prototype pollution in copy-props
Priority MEDIUM 45CWE-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
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
The package copy-props before 2.0.5 are vulnerable to Prototype Pollution via the main functionality.
Why it matters now
EPSS 0.01697 77th percentileScored 2026-11-07
Fix Fixed copy-props: 2.0.5copy-props (npm): 2.0.5
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 |
|---|---|---|---|---|---|
| — | copy-props | before 2.0.5 | 2.0.5 | Patch available | CNA |
| — | copy-props (npm) | before 2.0.5 | 2.0.5 | Patch available | GHSA-897m-rjf5-jp39 |
- copy-props Vendor— Affected before 2.0.5 Fixed in 2.0.5 Patch available CNA
- copy-props (npm) Vendor— Affected before 2.0.5 Fixed in 2.0.5 Patch available GHSA-897m-rjf5-jp39
Remediation
- Fix · CNA copy-props Fixed in 2.0.5
- Fix · GHSA-897m-rjf5-jp39 copy-props (npm) Fixed in 2.0.5 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2020-28503
- 2026-10-03 Alias added: GHSA-897m-rjf5-jp39
References
Sources
- CVE-2020-28503 · CVE Program
- CVE-2020-28503 · NVD
- FIRST EPSS
- GHSA-897m-rjf5-jp39 · GitHub Advisory Database · CC BY 4.0
- CVE-2020-28503 · Red Hat security data · CC BY 4.0
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