{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-66788 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-66788 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-66788 is a critical missing authorization vulnerability in Red Hat Advanced Cluster Management for Kubernetes 2.16, published on 20 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-66788 and fix it if it is affected.\n\nWhat it is: CVE-2026-66788 is a critical missing authorization vulnerability in Red Hat Advanced Cluster Management for Kubernetes 2.16, published on 20 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-66788 in the wild and no public exploit code.\n\nAffected product: Red Hat Advanced Cluster Management for Kubernetes 2.16. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-66788/ (Markdown: https://insights.sbomify.com/CVE-2026-66788/index.md)","id":"CVE-2026-66788","markdown":"https://insights.sbomify.com/CVE-2026-66788/index.md","name":"CVE-2026-66788","record":{"aliases":["GHSA-264j-8377-4hmm"],"analysis":{"component_type":"cloud_service","fix_type":"patch","impacts":["privilege_escalation","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Kubernetes cluster management","requires_auth":"low_privilege","summary":"Remote attackers can inject unauthorized resources into any namespace, including system ones, by exploiting attacker-controlled labels in Lighthouse.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":9.9,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-1104","name":"Use of Unmaintained Third Party Components"}],"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Lighthouse: lighthouse: arbitrary namespace injection via attacker-controlled broker label","id":"CVE-2026-66788","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Privilege escalation in Multicluster Global Hub 1.4.9","id":"CVE-2026-66792"},"packages":[],"prev":{"headline":"Lighthouse: lighthouse: cross-cluster dns spoofing via unvalidated endpointslice ip addresses","id":"CVE-2026-66787"},"products":["Red Hat Advanced Cluster Management for Kubernetes 2.16","Red Hat Advanced Cluster Management for Kubernetes 2.17"],"published":"2026-08-20","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Red Hat"]},"summary":"Remote attackers can inject unauthorized resources into any namespace, including system ones, by exploiting attacker-controlled labels in Lighthouse.","url":"https://insights.sbomify.com/CVE-2026-66788/"}