9.9
Critical
CVE-2026-66788 A flaw was found in Lighthouse
Description
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 products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Advanced Cluster Management for Kubernetes 2 | Versions not published | |
| Red Hat Advanced Cluster Management for Kubernetes 2.17 1788073481 | earliest → < 1788073481 | 1788073481 |
| Red Hat Advanced Cluster Management for Kubernetes 2.16 1790670912 | earliest → < 1790670912 | 1790670912 |
References
- RHSA-2026:63016 access.redhat.com
- RHSA-2026:85227 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2507533 bugzilla.redhat.com
Timeline
- Published
- Last modified
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