SEPTEMBER 18, 2026
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Case File

CVE-2026-66781

MEDIUM · CVSS 5.4 EPSS 0.26%

Source: NVD + CISA KEV + EPSS · Published 2026-08-18 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The Submariner operator in Kubernetes is vulnerable due to the unencrypted storage of the IPsec pre-shared key (PSK) within its Custom Resource, allowing unauthorized access. This flaw can lead to the passive decryption of network traffic between clusters, potentially exposing sensitive information. Organizations utilizing Kubernetes with Submariner should prioritize addressing this vulnerability to safeguard their inter-cluster communications.

CVE
CVE-2026-66781
Severity
MEDIUM
CVSS
5.4
EPSS
0.26%
Kubernetes

Original NVD Description

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.