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.
History

Thu, 03 Sep 2026 05:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:acm:2.17::el9
References

Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
Title Submariner-operator: submariner-operator: flat broker trust model grants every spoke full crud on all endpoints, secrets, and endpointslices in broker namespace Submariner-operator: broker serviceaccount secret (token + ca) logged in full at trace verbosity
Weaknesses CWE-532
CPEs cpe:/a:redhat:acm:2.11::el9
cpe:/a:redhat:acm:2.13::el9
cpe:/a:redhat:acm:2.14::el9
cpe:/a:redhat:acm:2.15::el9
cpe:/a:redhat:acm:2.16::el9
cpe:/a:redhat:acm:2.17::el9
References
Metrics cvssV3_1

{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}

cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}


Thu, 27 Aug 2026 04:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:acm:2.11::el9
cpe:/a:redhat:acm:2.14::el9
cpe:/a:redhat:acm:2.16::el9
References

Wed, 26 Aug 2026 22:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:acm:2.13::el9
cpe:/a:redhat:acm:2.15::el9
cpe:/a:redhat:acm:2.17::el9
References

Fri, 21 Aug 2026 21:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat advanced Cluster Management For Kubernetes
Vendors & Products Redhat advanced Cluster Management For Kubernetes

Wed, 19 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Tue, 18 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 18 Aug 2026 17:45:00 +0000

Type Values Removed Values Added
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.
Title Submariner-operator: submariner-operator: flat broker trust model grants every spoke full crud on all endpoints, secrets, and endpointslices in broker namespace
First Time appeared Redhat
Redhat acm
Weaknesses CWE-284
CPEs cpe:/a:redhat:acm:2
Vendors & Products Redhat
Redhat acm
References
Metrics cvssV3_1

{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-08-18T17:32:00.879Z

Updated: 2026-09-03T04:41:12.294Z

Reserved: 2026-07-27T17:51:24.885Z

Link: CVE-2026-66780

cve-icon Vulnrichment

Updated: 2026-08-18T18:44:56.550Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-18T18:19:23.940

Modified: 2026-09-03T13:06:00.197

Link: CVE-2026-66780

cve-icon Redhat

Severity : Important

Publid Date: 2026-08-18T16:35:00Z

Links: CVE-2026-66780 - Bugzilla