CVE-2026-66780

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:63016
https://access.redhat.com/security/cve/CVE-2026-66780
https://bugzilla.redhat.com/show_bug.cgi?id=2507524

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-18 18:19

Updated : 2026-09-03 13:06

NVD link : CVE-2026-66780

Mitre link : CVE-2026-66780

CVE.ORG link : CVE-2026-66780

JSON object : View

Products Affected

No product.

CWE

CWE-532

Insertion of Sensitive Information into Log File

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