{"id":"CVE-2026-63263","aliases":["BIT-elasticsearch-2026-63263","EUVD-2026-47591","GHSA-727x-48vv-8cj7"],"status":"published","title":"Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service","description":"Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Exponential Data Expansion (CAPEC-197). An authenticated user may submit a specially crafted query to the ES|QL engine that causes exponential CPU consumption during query evaluation. Because the resource exhaustion persists beyond query completion, repeated requests can fully exhaust the available query worker resources, rendering ES|QL queries unavailable until the node is restarted.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00472,"percentile":0.41052,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2026-07-21T23:10:49Z","modified":"2026-10-28T11:17:00Z","fixes":[{"ecosystem":"Bitnami","package":"elasticsearch","fixed_in":["8.19.19","9.3.8","9.4.4"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"elasticsearch","ranges":[{"type":"SEMVER","events":[{"introduced":"8.0.0"},{"fixed":"8.19.19"},{"introduced":"9.0.0"},{"fixed":"9.3.8"},{"introduced":"9.4.0"},{"fixed":"9.4.4"}]}]}],"products":[{"vendor":"elastic","product":"elasticsearch"}],"references":[{"url":"https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-security-update-esa-2026-74/388577","tags":["Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63263","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-727x-48vv-8cj7"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63263.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-63263","title":"Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service","description":"Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Exponential Data Expansion (CAPEC-197). An authenticated user may submit a specially crafted query to the ES|QL engine that causes exponential CPU consumption during query evaluation. Because the resource exhaustion persists beyond query completion, repeated requests can fully exhaust the available query worker resources, rendering ES|QL queries unavailable until the node is restarted.","status":"published","published":"2026-07-21T23:10:49.155Z","modified":"2026-07-22T13:07:01.561Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:19:56.284359Z"}],"euvd":[{"id":"EUVD-2026-47591","description":"Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Exponential Data Expansion (CAPEC-197). An authenticated user may submit a specially crafted query to the ES|QL engine that causes exponential CPU consumption during query evaluation. Because the resource exhaustion persists beyond query completion, repeated requests can fully exhaust the available query worker resources, rendering ES|QL queries unavailable until the node is restarted.","status":"published","published":"2026-07-21T23:10:49Z","modified":"2026-07-22T13:07:01Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T18:19:46.900828Z"}],"ghsa":[{"id":"GHSA-727x-48vv-8cj7","title":"Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via...","description":"Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Exponential Data Expansion (CAPEC-197). An authenticated user may submit a specially crafted query to the ES|QL engine that causes exponential CPU consumption during query evaluation. Because the resource exhaustion persists beyond query completion, repeated requests can fully exhaust the available query worker resources, rendering ES|QL queries unavailable until the node is restarted.","status":"published","published":"2026-07-22T00:32:36Z","modified":"2026-07-22T00:32:45Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:09:38.678188Z"}],"nvd":[{"id":"CVE-2026-63263","description":"Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Exponential Data Expansion (CAPEC-197). An authenticated user may submit a specially crafted query to the ES|QL engine that causes exponential CPU consumption during query evaluation. Because the resource exhaustion persists beyond query completion, repeated requests can fully exhaust the available query worker resources, rendering ES|QL queries unavailable until the node is restarted.","status":"published","published":"2026-07-22T00:17:31.283Z","modified":"2026-10-24T17:10:00.22Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:12:32.089897Z"}],"osv":[{"id":"CVE-2026-63263","title":"Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service","description":"Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Exponential Data Expansion (CAPEC-197). An authenticated user may submit a specially crafted query to the ES|QL engine that causes exponential CPU consumption during query evaluation. Because the resource exhaustion persists beyond query completion, repeated requests can fully exhaust the available query worker resources, rendering ES|QL queries unavailable until the node is restarted.","status":"published","published":"2026-07-21T23:10:49.155Z","modified":"2026-10-28T11:17:00.805986957Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:45:13.306117Z"},{"id":"BIT-elasticsearch-2026-63263","title":"Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service","description":"Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Exponential Data Expansion (CAPEC-197). An authenticated user may submit a specially crafted query to the ES|QL engine that causes exponential CPU consumption during query evaluation. Because the resource exhaustion persists beyond query completion, repeated requests can fully exhaust the available query worker resources, rendering ES|QL queries unavailable until the node is restarted.","status":"published","published":"2026-07-28T08:53:06.126Z","modified":"2026-09-08T08:47:16.486571201Z","updated_at":"2026-11-02T15:28:29.563843Z"}]}}