Prototype pollution in @cookiex/deep
Priority MEDIUM 45CWE-1321Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-915.
Summary
This affects all versions of package @cookiex/deep. The global proto object can be polluted using the __proto__ object.
Why it matters now
EPSS 0.0159 75th percentileScored 2026-11-07
Fix Fixed @cookiex/deep (npm): 0.0.7
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 |
|---|---|---|---|---|---|
| — | @cookiex/deep | all versions | — | No fix listed | CNA |
| — | @cookiex/deep (npm) | before 0.0.7 | 0.0.7 | Patch available | GHSA-92v9-xh2q-fq9f |
- @cookiex/deep Vendor— Affected all versions Fixed in — No fix listed CNA
- @cookiex/deep (npm) Vendor— Affected before 0.0.7 Fixed in 0.0.7 Patch available GHSA-92v9-xh2q-fq9f
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cookiex-deep_project:cookiex-deep:*:*:*:*:*:node.js:*:* | before 0.0.6 | Vulnerable | Cookiex-deep Project |
- cpe:2.3:a:cookiex-deep_project:cookiex-deep:*:*:*:*:*:node.js:*:* Versions before 0.0.6 Vulnerable ·Cookiex-deep Project
Remediation
- Fix · GHSA-92v9-xh2q-fq9f @cookiex/deep (npm) Fixed in 0.0.7 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-23442
- 2026-10-03 Alias added: GHSA-92v9-xh2q-fq9f
References
Sources
- CVE-2021-23442 · CVE Program
- CVE-2021-23442 · NVD
- FIRST EPSS
- GHSA-92v9-xh2q-fq9f · GitHub Advisory Database · CC BY 4.0
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