CVE-2026-66781

Summary

A flaw was found in the Submariner operator. The Submariner Custom Resource (CR), used for configuring network connectivity, stores the IPsec pre-shared key (PSK) in an unencrypted format. This key, which is critical for securing communication between Kubernetes clusters, can be accessed by unauthorized parties. Such access enables an attacker to passively decrypt network traffic flowing between any two clusters in the mesh, resulting in sensitive information disclosure.

Affected Software

VendorProductVersion RangeStatus

Weaknesses

  • CWE-312: Cleartext Storage of Sensitive Information

Workarounds

To mitigate the risk of IPsec pre-shared key (PSK) disclosure, implement strict Kubernetes Role-Based Access Control (RBAC) policies to limit access to Submariner Custom Resources. Ensure that only authorized administrators and systems are granted permissions to view submariner Custom Resources within their namespaces. Additionally, exercise caution when collecting and storing diagnostic data, such as must-gather bundles, and when managing GitOps repositories, as these may inadvertently expose the cleartext PSK.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References