CVE-2026-66788

A flaw was found in Lighthouse. A remote attacker, by compromising a spoke cluster, can exploit a vulnerability where the destination namespace for resource injection is derived from an attacker-controlled label or annotation on the broker object. This allows the attacker to inject unauthorized EndpointSlices and ServiceImports into any namespace on peer clusters, including critical system namespaces like kube-system and openshift-*. This could lead to privilege escalation or other forms of system compromise within the cluster.

CVSS v3 3.7 LOW

3.7^/10

CVSS v3 : LOW

Vector :

Exploitability : 2.2 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:63016
https://access.redhat.com/security/cve/CVE-2026-66788
https://bugzilla.redhat.com/show_bug.cgi?id=2507533

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-20 19:16

Updated : 2026-09-03 13:06

NVD link : CVE-2026-66788

Mitre link : CVE-2026-66788

CVE.ORG link : CVE-2026-66788

JSON object : View

Products Affected

No product.

CWE

CWE-1104

Use of Unmaintained Third Party Components

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