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CVE-2026-66788

9.9 critical SSVC exploitation: none Published
NVD · CVE.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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 3

  1. StatusAwaiting Analysis → PublishedNVD modified 2026-10-19 17:02
  2. References+1 references (now 4)NVD modified 2026-10-19 17:17
  3. First seenCVSS 9.9NVD modified 2026-10-12 20:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 4