CVE-2021-23426
Prototype Pollution
HIGH
7.5
CVSS Score
Published: September 1, 2021 at 02:25 PM UTC
Updated: June 17, 2026 at 03:38 AM UTC
1 product affected across 1 vendorProto
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Severity
HIGH7.5
Exploit prediction
EPSS 0.9%
Description
This affects all versions of package Proto. It is possible to inject pollute the object property of an application using Proto by leveraging the merge function.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
95%
All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_MISCExploitMitigationThird Party Advisory
Source: [email protected]
https://snyk.io/vuln/SNYK-JS-PROTO-1316301x_refsource_MISCProductThird Party Advisory
Source: [email protected]
https://www.npmjs.com/package/ProtoCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-Other
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