CVE-2021-23440
Prototype Pollution
CRITICAL
9.8
CVSS Score
Published: September 12, 2021 at 12:55 PM UTC
Updated: June 17, 2026 at 03:38 AM UTC
2 products affected across 2 vendorsCommunications Cloud Native Core PolicySet Value
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Severity
CRITICAL9.8
Exploit prediction
EPSS 2%
Description
This affects the package set-value before <2.0.1, >=3.0.0 <4.0.1. A type confusion vulnerability can lead to a bypass of CVE-2019-10747 when the user-provided keys used in the path parameter are arrays.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 2.0.1v < 4.0.13.0.0 ≤ v < 4.0.1
Affected range stops below 2.0.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.0.1, 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 (6)
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/jonschlinkert/set-value/commit/7cf8073bb06bf0c15e08475f9f952823b4576452x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/jonschlinkert/set-value/pull/33x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1584212x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://snyk.io/vuln/SNYK-JS-SETVALUE-1540541x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://www.huntr.dev/bounties/2eae1159-01de-4f82-a177-7478a408c4a2/x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://www.oracle.com/security-alerts/cpujan2022.htmlCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-843
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