Prototype pollution in object-extend
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
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
The package object-extend from 0.0.0 are vulnerable to Prototype Pollution via object-extend.
Why it matters now
EPSS 0.01378 72nd 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 |
|---|---|---|---|---|---|
| — | object-extend | 0.0.0 and later | — | No fix listed | CNA |
| — | object-extend (npm) | up to 0.5.0 | — | No fix listed | GHSA-m639-9whg-fw97 |
- object-extend Vendor— Affected 0.0.0 and later Fixed in — No fix listed CNA
- object-extend (npm) Vendor— Affected up to 0.5.0 Fixed in — No fix listed GHSA-m639-9whg-fw97
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:object-extend_project:object-extend:*:*:*:*:*:node.js:*:* | up to 0.5.0 | Vulnerable | Object-extend Project |
- cpe:2.3:a:object-extend_project:object-extend:*:*:*:*:*:node.js:*:* Versions up to 0.5.0 Vulnerable ·Object-extend Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-23702
- 2026-10-03 Alias added: GHSA-m639-9whg-fw97
References
Sources
- CVE-2021-23702 · CVE Program
- CVE-2021-23702 · NVD
- FIRST EPSS
- GHSA-m639-9whg-fw97 · GitHub Advisory Database · CC BY 4.0
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