{"id":"CVE-2026-71576","revision":"0e06cb7ddd7b49daa819d47ef7ff1357","records":[{"revision":"0e06cb7ddd7b49daa819d47ef7ff1357","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-71576","aliases":[],"title":"Multicluster-global-hub: multicluster-global-hub: manager trusts self-asserted evt.source() for leaf-hub identity in all status handlers","description":"A flaw was found in multicluster-global-hub. The manager component improperly validates the source identity of incoming CloudEvents on Kafka status topics. A remote attacker, after compromising a managed hub and obtaining its Kafka client certificate, can manipulate the self-asserted source identity. This allows the attacker to falsify or delete critical data, such as compliance, inventory, and cluster health information, belonging to other hubs in the database.","state":0,"publishedAt":"2026-08-10T16:41:53.193+00:00","modifiedAt":"2026-09-29T16:43:50.602+00:00","affected":[{"ecosystem":"https://catalog.redhat.com/software/containers/","name":"multicluster-globalhub/multicluster-globalhub-manager-rhel9","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Multicluster Global Hub 1.4.9\",\n                    \"collectionURL\": \"https://catalog.redhat.com/software/containers/\",\n                    \"packageName\": \"multicluster-globalhub/multicluster-globalhub-manager-rhel9\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"1788355599\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/a:redhat:multicluster_globalhub:1.4::el9\"\n                    ]\n                }"},{"ecosystem":"https://catalog.redhat.com/software/containers/","name":"multicluster-globalhub/multicluster-globalhub-manager-rhel9","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Multicluster Global Hub 1.5.8\",\n                    \"collectionURL\": \"https://catalog.redhat.com/software/containers/\",\n                    \"packageName\": \"multicluster-globalhub/multicluster-globalhub-manager-rhel9\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"1789515288\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/a:redhat:multicluster_globalhub:1.5::el9\"\n                    ]\n                }"},{"ecosystem":"https://catalog.redhat.com/software/containers/","name":"multicluster-globalhub/multicluster-globalhub-manager-rhel9","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Multicluster Global Hub 1.6.6\",\n                    \"collectionURL\": \"https://catalog.redhat.com/software/containers/\",\n                    \"packageName\": \"multicluster-globalhub/multicluster-globalhub-manager-rhel9\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"1790086176\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/a:redhat:multicluster_globalhub:1.6::el9\"\n                    ]\n                }"},{"ecosystem":"https://catalog.redhat.com/software/containers/","name":"multicluster-globalhub/multicluster-globalhub-manager-rhel9","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Multicluster Global Hub 1.7.3\",\n                    \"collectionURL\": \"https://catalog.redhat.com/software/containers/\",\n                    \"packageName\": \"multicluster-globalhub/multicluster-globalhub-manager-rhel9\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"1788377424\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/a:redhat:multicluster_globalhub:1.7::el9\"\n                    ]\n                }"},{"ecosystem":"https://catalog.redhat.com/software/containers/","name":"multicluster-globalhub/multicluster-globalhub-manager-rhel9","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Multicluster Global Hub 1.8.2\",\n                    \"collectionURL\": \"https://catalog.redhat.com/software/containers/\",\n                    \"packageName\": \"multicluster-globalhub/multicluster-globalhub-manager-rhel9\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"1788359454\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/a:redhat:multicluster_globalhub:1.8::el9\"\n                    ]\n                }"},{"ecosystem":"https://catalog.redhat.com/software/containers/","name":"multicluster-globalhub/multicluster-globalhub-manager-rhel9","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Multicluster Global Hub 1.8.2\",\n                    \"collectionURL\": \"https://catalog.redhat.com/software/containers/\",\n                    \"packageName\": \"multicluster-globalhub/multicluster-globalhub-manager-rhel9\",\n                    \"defaultStatus\": \"affected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"1788359454\",\n                            \"lessThan\": \"*\",\n                            \"versionType\": \"rpm\",\n                            \"status\": \"unaffected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:/a:redhat:multicluster_globalhub:1.8::el9\"\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L","score":8.5,"severity":"HIGH"}],"references":["https://access.redhat.com/errata/RHSA-2026:67516","https://access.redhat.com/errata/RHSA-2026:67842","https://access.redhat.com/errata/RHSA-2026:68515","https://access.redhat.com/errata/RHSA-2026:71597","https://access.redhat.com/errata/RHSA-2026:73038","https://access.redhat.com/errata/RHSA-2026:73419","https://access.redhat.com/security/cve/CVE-2026-71576","https://bugzilla.redhat.com/show_bug.cgi?id=2512513"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-71576","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-71576","identifiers":["CVE-2026-71576"]},"retained":false,"historicalAffected":[]}],"coverage":[]}