Dell Patches Six Critical Flaws in Container Storage Modules for Kubernetes

Dell has addressed six vulnerabilities in its Container Storage Modules (CSM), the software suite that connects Dell storage arrays to Kubernetes clusters. Two of the flaws received the highest possible CVSS score of 10.0, enabling remote attackers to gain administrative control without any authentication.

The first critical issue, CVE-2026-63688, stems from missing authentication on the gRPC server within the storage authorization component. An unauthenticated remote attacker can retrieve administrator credentials for every registered storage backend array.

The second 10.0-rated vulnerability, CVE-2026-63692, involves the absence of authentication in both the authorization proxy and the tenant service. Successful exploitation grants complete administrative control over the very service responsible for managing access controls.

A third high-severity flaw, CVE-2026-67269 (CVSS 9.9), results from improper privilege management in the custom resource reconciler. A low-privileged attacker can submit a single malicious resource definition and escalate privileges to root on all nodes, reaching every device in the cluster.

Two additional issues rated 9.8 originate from embedded secrets in the code. CVE-2026-54472 contains hardcoded credentials inside the authorization module, while CVE-2026-61421 exposes the private key used to sign JWT tokens, allowing attackers to forge valid authentication credentials.

The final vulnerability, CVE-2026-67273 (CVSS 9.6), resides in the template engine and permits reading Kubernetes secrets across the entire cluster as well as creating cluster-scoped permissions.

All versions prior to 1.17.0 are affected. The fixes are included in version 1.18.0. No alternative mitigations are available. Dell strongly advises rotating all JWT signing keys after the update, as the previous keys should be treated as publicly known.