CVE-2020-8566: Kubernetes

Medium severity, CVSS 5.5. EPSS: 0.5% chance of exploitation in the next 30 days.

In Kubernetes clusters using Ceph RBD as a storage provisioner, with logging level of at least 4, Ceph RBD admin secrets can be written to logs. This occurs in kube-controller-manager's logs during provisioning of Ceph RBD persistent claims. This affects < v1.19.3, < v1.18.10, < v1.17.13.

Affected products

• Kubernetes Kubernetes: from 1.17.0, before 1.17.13 (fixed in 1.17.13); from 1.18.0, before 1.18.10 (fixed in 1.18.10); from 1.19.0, before 1.19.3 (fixed in 1.19.3)

Published 2020-12-07. Last modified 2026-06-17.