CVE-2021-21661: Jenkins Kubernetes

Medium severity, CVSS 4.3. EPSS: 1.6% chance of exploitation in the next 30 days.

Jenkins Kubernetes CLI Plugin 1.10.0 and earlier does not perform permission checks in several HTTP endpoints, allowing attackers with Overall/Read permission to enumerate credentials IDs of credentials stored in Jenkins.

Affected products

• Jenkins Kubernetes: up to and including 1.10.0

Published 2021-06-10. Last modified 2026-06-17.