CVE-2026-66788: Lighthouse: arbitrary namespace injection via attacker-controlled broker label
Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16
Vendor fix available · Affected: Red Hat Advanced Cluster Management for Kubernetes 2.16 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 52% of scored CVEs
DescriptionCVE.org
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.
Affected products8
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17Versions not stated
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Red Hat
- Published
- August 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-66788 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.