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No exploitation reportedFix available

CVE-2021-23440

No exploitation reported by the sources we read.

  • Published2021-09-12
  • Fixed in4.0.1 · 3.0.3 · 2.0.1
  • WeaknessCWE-843

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2021-09-1213:15CVE publishedNVD

Versions per branch

NVD · OSV
Set-value project set-value
BranchAffectedFixed in
4.0≥ 3.0.0, < 4.0.14.0.1
4.0≥ 4.0.0, < 4.0.14.0.1
3.0≥ 3.0.0, < 3.0.33.0.3
2.0< 2.0.12.0.1
Oracle communications cloud native core policy
BranchAffectedFixed in
1.14= 1.14.0no fix published
set-value-nuget
BranchAffectedFixed in
2.0< 2.0.02.0.0

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • js-jqueryAzure Linux:3all versions · no fixed version listed
  • node-set-valueUbuntu:26.10all versions · no fixed version listed
  • node-set-valueUbuntu:26.04:LTSall versions · no fixed version listed
  • node-set-valueUbuntu:25.10all versions · no fixed version listed
  • node-set-valueUbuntu:24.04:LTSall versions · no fixed version listed
  • node-set-valueUbuntu:22.04:LTSall versions · no fixed version listed
  • node-set-valueUbuntu:20.04:LTSall versions · no fixed version listed
  • node-set-valueUbuntu:18.04:LTSall versions · no fixed version listed

4 more package ranges on OSV.dev

Vendor advisories

  • CVE-2021-23440 Red Hat Product Security3 products fixed · 26 known affected

    nodejs-set-value: type confusion allows bypass of CVE-2019-10747

    openshift-logging/kibana6-rhel8 as a component of Logging Subsystem for Red Hat OpenShift · servicemesh-grafana as a component of OpenShift Service Mesh 1 · servicemesh-grafana-prometheus as a component of OpenShift Service Mesh 1 · +23 more

  • RHSA-2022:6156 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: Red Hat OpenShift Data Foundation 4.11.0 security, enhancement, & bugfix update

  • RHSA-2021:5038 Red Hat Product Security77 products fixed

    Red Hat Security Advisory: Red Hat Advanced Cluster Management 2.2.10 security updates and bug fixes

  • RHSA-2021:3873 Red Hat Product Security77 products fixed

    Red Hat Security Advisory: Red Hat Advanced Cluster Management 2.2.9 security, bug, and container updates

Full record on NVD

Fix

  1. Update Set-value project set-value to 4.0.1 · 3.0.3 · 2.0.1
  2. Vendor fix Red Hat Product Security RHSA-2022:6156 · 3 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
  3. Vendor fix Red Hat Product Security RHSA-2021:5038 · 77 productsFor Red Hat Advanced Cluster Management for Kubernetes, see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://access.redhat.com/documentation/en-us/red_hat_…
  4. Vendor fix Red Hat Product Security RHSA-2021:3873 · 77 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.2/html-single/install/index#instal…
  5. No fix available, says the vendor Red Hat Product Security CVE-2021-23440 · 9 productsAffected
  6. No fix planned, says the vendor Red Hat Product Security CVE-2021-23440 · 10 productsOut of support scope
  7. No fix planned, says the vendor Red Hat Product Security CVE-2021-23440 · 7 productsWill not fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.17.3known since 2026-10-23
  • NVDCVSS 3.19.8read 2026-10-23
  • NVDCVSS 2.07.5read 2026-10-23
  • NVDweakness (CWE)CWE-843read 2026-10-23
  • FIRST EPSSEPSS score2.2 %2026-11-08
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryHIGH2021-09-13

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2021-09-12
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-4jqc-8m5r-9rpr

Frequently asked questions

What is CVE-2021-23440?

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.

Is CVE-2021-23440 actively exploited?

Active exploitation of CVE-2021-23440 has not been confirmed. Its EPSS score was 2.2% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-23440?

CVE-2021-23440 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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