CVE-2021-20218: Red Hat A-Mq Online

High severity, CVSS 7.4. EPSS: 1.3% chance of exploitation in the next 30 days.

A flaw was found in the fabric8 kubernetes-client in version 4.2.0 and after. This flaw allows a malicious pod/container to cause applications using the fabric8 kubernetes-client `copy` command to extract files outside the working path. The highest threat from this vulnerability is to integrity and system availability. This has been fixed in kubernetes-client-4.13.2 kubernetes-client-5.0.2 kubernetes-client-4.11.2 kubernetes-client-4.7.2

Affected products

• Red Hat A-Mq Online: affected versions not specified
• Red Hat Build Of Quarkus: affected versions not specified
• Red Hat Codeready Studio: version 12.0 only
• Red Hat Descision Manager: version 7.0 only
• Red Hat Integration Camel K: affected versions not specified
• Red Hat JBoss Fuse: version 7.0.0 only
• Red Hat Kubernetes-Client: from 4.2.0, before 4.7.2 (fixed in 4.7.2); from 4.8.0, before 4.11.2 (fixed in 4.11.2); from 4.12.0, before 4.13.2 (fixed in 4.13.2); from 5.0.0, before 5.0.2 (fixed in 5.0.2)
• Red Hat Openshift Container Platform: version 3.11 only
• Red Hat Process Automation: version 7.0 only

Published 2021-03-16. Last modified 2026-06-17.