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{"bugzilla": {"description": "grafana/tempo: Tempo: Denial of Service via large queries", "id": "2461395", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461395"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-770", "details": ["A flaw was found in Tempo. A remote attacker can exploit this vulnerability by sending large queries to the Tempo service. This can lead to excessive memory allocations, potentially causing a Denial of Service (DoS) by impacting the availability of the service."], "name": "CVE-2026-21728", "package_state": [{"cpe": "cpe:/a:redhat:logging:6", "fix_state": "Affected", "package_name": "openshift-logging/lokistack-gateway-rhel9", "product_name": "Logging Subsystem for Red Hat OpenShift"}, {"cpe": "cpe:/a:redhat:multicluster_globalhub", "fix_state": "Affected", "package_name": "multicluster-globalhub/multicluster-globalhub-grafana-rhel8", "product_name": "Multicluster Global Hub"}, {"cpe": "cpe:/a:redhat:multicluster_globalhub", "fix_state": "Affected", "package_name": "multicluster-globalhub/multicluster-globalhub-grafana-rhel9", "product_name": "Multicluster Global Hub"}, {"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Affected", "package_name": "rhacm2/acm-grafana-rhel9", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}, {"cpe": "cpe:/a:redhat:ceph_storage:5", "fix_state": "Affected", "package_name": "rhceph/rhceph-5-dashboard-rhel8", "product_name": "Red Hat Ceph Storage 5"}, {"cpe": "cpe:/a:redhat:ceph_storage:6", "fix_state": "Affected", "package_name": "rhceph/rhceph-6-dashboard-rhel9", "product_name": "Red Hat Ceph Storage 6"}, {"cpe": "cpe:/a:redhat:ceph_storage:9", "fix_state": "Affected", "package_name": "rhceph/grafana-rhel10", "product_name": "Red Hat Ceph Storage 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "grafana", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "grafana", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift_distributed_tracing:3", "fix_state": "Affected", "package_name": "rhosdt/tempo-gateway-rhel9", "product_name": "Red Hat OpenShift distributed tracing 3"}, {"cpe": "cpe:/a:redhat:openshift_distributed_tracing:3", "fix_state": "Not affected", "package_name": "rhosdt/tempo-query-rhel9", "product_name": "Red Hat OpenShift distributed tracing 3"}, {"cpe": "cpe:/a:redhat:openshift_distributed_tracing:3", "fix_state": "Not affected", "package_name": "rhosdt/tempo-rhel9", "product_name": "Red Hat OpenShift distributed tracing 3"}, {"cpe": "cpe:/a:redhat:openshift_distributed_tracing:3", "fix_state": "Not affected", "package_name": "rhosdt/tempo-rhel9-operator", "product_name": "Red Hat OpenShift distributed tracing 3"}], "public_date": "2026-04-24T08:00:47Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-21728\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-21728\nhttps://grafana.com/security/security-advisories/cve-2026-21728"], "threat_severity": "Important"}