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.
- Score
- CVSS 3.1 9.9 Critical
- Status
- Awaiting Analysis - secalert@redhat.com
- Published
- 2026-08-20
- Last modified
- 2026-10-19
- Weaknesses
- CWE-1104
Affected products
References
- https://access.redhat.com/errata/RHSA-2026:63016
- https://access.redhat.com/errata/RHSA-2026:85227
- https://access.redhat.com/security/cve/CVE-2026-66788
- https://bugzilla.redhat.com/show_bug.cgi?id=2507533
