CVE-2021-23442
Prototype Pollution
CRITICAL
9.8
CVSS Score
Published: September 17, 2021 at 09:45 AM UTC
Updated: June 17, 2026 at 03:38 AM UTC
1 product affected across 1 vendorCookiex Deep
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Severity
CRITICAL9.8
Exploit prediction
EPSS 2%
Description
This affects all versions of package @cookiex/deep. The global proto object can be polluted using the __proto__ object.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 0.0.6
Affected range stops below 0.0.6, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (3)
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/tony-tsx/cookiex-deep/commit/b5bea2b7f34a5fa9abb4446cbd038ecdbcd09c88x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://github.com/tony-tsx/cookiex-deep/issues/1x_refsource_MISCExploitPatchThird Party Advisory
Source: [email protected]
https://snyk.io/vuln/SNYK-JS-COOKIEXDEEP-1582793CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-1321
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