{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-73266 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-73266 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-73266 is a high-severity missing authorization vulnerability in Red Hat multicluster engine for Kubernetes 2.10, published on 13 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-2026-73266 and fix it if it is affected.\n\nWhat it is: CVE-2026-73266 is a high-severity missing authorization vulnerability in Red Hat multicluster engine for Kubernetes 2.10, published on 13 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-2026-73266 in the wild and no public exploit code.\n\nAffected product: Red Hat multicluster engine for Kubernetes 2.10. 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-2026-73266/ (Markdown: https://insights.sbomify.com/CVE-2026-73266/index.md)","id":"CVE-2026-73266","markdown":"https://insights.sbomify.com/CVE-2026-73266/index.md","name":"CVE-2026-73266","record":{"aliases":["GHSA-xp42-v53j-r9gh"],"analysis":{"component_type":"cloud_service","fix_type":"patch","impacts":["privilege_escalation","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Kubernetes multicluster engine","requires_auth":"low_privilege","summary":"Authenticated tenants can manipulate labels to join other tenants' cluster sets, enabling unauthorized policy and workload injection.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-441","name":"Unintended Proxy or Intermediary"}],"description":"A flaw was found in the clusterclaims-controller component of Multicluster Engine (MCE). An authenticated tenant can exploit this vulnerability by manipulating ClusterClaim labels. This allows the tenant to force a cluster to join a ManagedClusterSet belonging to another tenant. Such unauthorized access could enable the injection of policies and workloads into other tenants' clusters.","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":"Missing authorization in multicluster engine for Kubernetes 2.10","id":"CVE-2026-73266","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":8,"next":{"headline":"Missing authorization in multicluster engine for Kubernetes 2.10","id":"CVE-2026-73267"},"packages":[],"prev":{"headline":"RustFS: Version-specific object reads authorize the non-version action","id":"CVE-2026-73265"},"products":["multicluster engine for Kubernetes 2.10","multicluster engine for Kubernetes 2.11","multicluster engine for Kubernetes 2.17","multicluster engine for Kubernetes 2.6","multicluster engine for Kubernetes 2.8","multicluster engine for Kubernetes 2.9"],"published":"2026-08-13","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":"partial"},"state":"PUBLISHED","updated":"2026-09-29","vendors":["Red Hat"]},"summary":"Authenticated tenants can manipulate labels to join other tenants' cluster sets, enabling unauthorized policy and workload injection.","url":"https://insights.sbomify.com/CVE-2026-73266/"}