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No exploitation reportedFix available

CVE-2022-21803

No exploitation reported by the sources we read.

  • Published2022-04-12
  • Fixed in0.11.4
  • WeaknessCWE-1321

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 nconf before 0.11.4. When using the memory engine, it is possible to store a nested JSON representation of the configuration. The .set() function, that is responsible for setting the configuration properties, is vulnerable to Prototype Pollution. By providing a crafted property, it is possible to modify the properties on the Object.prototype.

Timeline

dates in UTC
  1. 2022-04-1216:15CVE publishedNVD

Versions per branch

NVD · OSV
Nconf project nconf
BranchAffectedFixed in
0.11< 0.11.40.11.4

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.

Vendor advisories

  • CVE-2022-21803 Red Hat Product Security7 known affected

    nconf: Prototype pollution in memory store

    rhacm2/application-ui-rhel8 as a component of Red Hat Advanced Cluster Management for Kubernetes 2 · rhacm2/console-api-rhel8 as a component of Red Hat Advanced Cluster Management for Kubernetes 2 · rhacm2/console-rhel8 as a component of Red Hat Advanced Cluster Management for Kubernetes 2 · +4 more

  • RHSA-2022:5201 Red Hat Product Security221 products fixed

    Red Hat Security Advisory: Red Hat Advanced Cluster Management 2.4.5 security updates and bug fixes

  • RHSA-2022:4956 Red Hat Product Security204 products fixed

    Red Hat Security Advisory: Red Hat Advanced Cluster Management 2.5 security updates, images, and bug fixes

  • RHSA-2022:1681 Red Hat Product Security221 products fixed

    Red Hat Security Advisory: Red Hat Advanced Cluster Management 2.4.4 security updates and bug fixes

Full record on NVD

Fix

  1. Update Nconf project nconf to 0.11.4
  2. Vendor fix Red Hat Product Security RHSA-2022:5201 · 221 productsFor Red Hat Advanced Cluster Management for Kubernetes, see the following documentation, which will be updated shortly for this release, for important instructions on installing this update: https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.5/html-s…
  3. Vendor fix Red Hat Product Security RHSA-2022:4956 · 204 productsFor Red Hat Advanced Cluster Management for Kubernetes, see the following documentation, which will be updated shortly for this release, for important instructions on installing this release: https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.5/html-…
  4. Vendor fix Red Hat Product Security RHSA-2022:1681 · 221 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_…
  5. No fix available, says the vendor Red Hat Product Security CVE-2022-21803 · 7 productsAffected

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 3.17.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • NVDweakness (CWE)CWE-1321read 2026-10-23
  • FIRST EPSSEPSS score1.8 %2026-11-08
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryHIGH2022-04-22

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Published
2022-04-12
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-6xwr-q98w-rvg7

Frequently asked questions

What is CVE-2022-21803?

This affects the package nconf before 0.11.4. When using the memory engine, it is possible to store a nested JSON representation of the configuration. The .set() function, that is responsible for setting the configuration properties, is vulnerable to Prototype Pollution. By providing a crafted property, it is possible to modify the properties on the Object.prototype.

Is CVE-2022-21803 actively exploited?

Active exploitation of CVE-2022-21803 has not been confirmed. Its EPSS score was 1.8% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-21803?

CVE-2022-21803 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

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