{"id":"CVE-2026-66788","title":"A flaw was found in Lighthouse","summary":"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 brok…","severity":"critical","cvss":9.9,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H","cwe":["CWE-1104"],"published":"2026-08-20","updated":"2026-10-12","sourceUpdated":"2026-10-12T20:17:09.960","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-66788","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:63016","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-66788","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507533","label":"secalert@redhat.com"}],"tags":["nvd"],"epss":0.00448,"epssPercentile":0.37075,"ingestedAt":"2026-10-12T21:04:28.911Z","slug":"CVE-2026-66788","body":"## Overview\n\nA 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":55,"depthScoreParts":{"impact":54.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}