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Vulnerability record · CVE-2021-4178 · published 24 August 2022

CVE-2021-4178: Redhat fabric8-kubernetes deserialization of untrusted data vulnerability

Redhat · Fabric8 Kubernetes

A arbitrary code execution flaw was found in the Fabric 8 Kubernetes client affecting versions 5.0.0-beta-1 and above. Due to an improperly configured YAML parsing, this will allow a local and privileged attacker to supply malicious YAML.

6.7 CVSS 3.1 Medium EPSS 0.33% · top 75.9% CWE-502 · Deserialization of untrusted data
6.7CVSS 3.1 base score
0.33%EPSS exploitation probability, 30 days
NoNot in CISA KEV
9Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

A arbitrary code execution flaw was found in the Fabric 8 Kubernetes client affecting versions 5.0.0-beta-1 and above. Due to an improperly configured YAML parsing, this will allow a local and privileged attacker to supply malicious YAML.

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

9 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/security/cve/CVE-2021-4178 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2034388 Issue TrackingVendor Advisory
https://github.com/advisories/GHSA-98g7-rxmf-rrxm Third Party Advisory
https://github.com/fabric8io/kubernetes-client/issues/3653 Issue TrackingThird Party Advisory
https://access.redhat.com/security/cve/CVE-2021-4178 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2034388 Issue TrackingVendor Advisory
https://github.com/advisories/GHSA-98g7-rxmf-rrxm Third Party Advisory
https://github.com/fabric8io/kubernetes-client/issues/3653 Issue TrackingThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-4178), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.