SEPTEMBER 18, 2026
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Case File

CVE-2026-66780

MEDIUM · CVSS 6.5 EPSS 0.24%

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

CyberRota Analysis

AI-Generated

A critical vulnerability exists in the submariner-operator component, where the `submariner-k8s-broker-cluster` Role has excessive permissions that can be exploited by an attacker on a compromised cluster. This flaw allows the attacker to modify network configurations and redirect inter-cluster tunnel traffic, facilitating a Man-in-the-Middle (MITM) attack across the cluster mesh. Organizations utilizing submariner for Kubernetes networking should prioritize immediate remediation to mitigate the risk of unauthorized access and data interception.

CVE
CVE-2026-66780
Severity
MEDIUM
CVSS
6.5
EPSS
0.24%

Original NVD Description

A flaw was found in the submariner-operator component. The `submariner-k8s-broker-cluster` Role, which is assigned to joined clusters, possesses excessive permissions. This allows a compromised cluster to alter network configurations, specifically by overwriting other clusters' endpoint information. Consequently, an attacker can redirect inter-cluster tunnel traffic, enabling a Man-in-the-Middle (MITM) attack across the entire cluster mesh.