{"schemaVersion":3,"id":"CVE-2026-63263","aliases":["CGA-3j7w-8683-pvc4","CGA-5986-8rmh-h38g","CGA-9hjh-qwvq-7j98","CGA-fmg9-x8c3-7gcj","CGA-gf3r-4v3w-63mj","CGA-mfg6-mjf8-6h9w","CGA-mg25-hm66-p724","CGA-q5c8-2426-23pf","CGA-3j6v-xmph-8v5c","CGA-46h2-369g-g67c","CGA-fm38-8996-3rh5","CGA-x645-4w5f-84qw"],"status":"published","duplicateOf":null,"title":null,"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.","dates":{"published":"2026-07-21T23:10:49.155Z","modified":"2026-07-22T13:07:01.561Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Wolfi","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","exploitability":7.2,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Chainguard","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","exploitability":7.2,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00472,"percentile":0.39472,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.23200000000000004,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.0024},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.0024,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.0024,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.0024,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.0024,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.0024,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.0024,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0024,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0024,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0024,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0024,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00472,"percentile":0.39472}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.0024,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0024,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0024,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0024,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0024,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00472,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00472,"percentile":0.39472}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption","description":"The product does not properly control the allocation and maintenance of a limited resource.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/400.html"}],"affected":[{"vendor":"chainguard","product":"elasticsearch-9.1","name":"elasticsearch-9.1","label":"elasticsearch-9.1","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/elasticsearch-9.1","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"chainguard","product":"elasticsearch-9.2","name":"elasticsearch-9.2","label":"elasticsearch-9.2","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/elasticsearch-9.2","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"chainguard","product":"ruby3.2-elasticsearch","name":"ruby3.2-elasticsearch","label":"ruby3.2-elasticsearch","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/ruby3.2-elasticsearch","purlType":"apk","versions":[{"text":"< 9.5.0-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 9.5.0-r0","eol":null,"hubHref":null},{"vendor":"chainguard","product":"ruby3.3-elasticsearch","name":"ruby3.3-elasticsearch","label":"ruby3.3-elasticsearch","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/ruby3.3-elasticsearch","purlType":"apk","versions":[{"text":"< 9.5.0-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 9.5.0-r0","eol":null,"hubHref":null},{"vendor":"chainguard","product":"ruby3.4-elasticsearch","name":"ruby3.4-elasticsearch","label":"ruby3.4-elasticsearch","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/ruby3.4-elasticsearch","purlType":"apk","versions":[{"text":"< 9.5.0-r0","noFixRecorded":false,"fixedIn":null},{"text":"< 9.5.0-r1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 9.5.0-r0 | < 9.5.0-r1","eol":null,"hubHref":null},{"vendor":"chainguard","product":"ruby4.0-elasticsearch","name":"ruby4.0-elasticsearch","label":"ruby4.0-elasticsearch","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/ruby4.0-elasticsearch","purlType":"apk","versions":[{"text":"< 9.5.0-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 9.5.0-r0","eol":null,"hubHref":null},{"vendor":"wolfi","product":"ruby3.2-elasticsearch","name":"ruby3.2-elasticsearch","label":"ruby3.2-elasticsearch","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/ruby3.2-elasticsearch","purlType":"apk","versions":[{"text":"< 9.5.0-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 9.5.0-r0","eol":null,"hubHref":null},{"vendor":"wolfi","product":"ruby3.3-elasticsearch","name":"ruby3.3-elasticsearch","label":"ruby3.3-elasticsearch","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/ruby3.3-elasticsearch","purlType":"apk","versions":[{"text":"< 9.5.0-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 9.5.0-r0","eol":null,"hubHref":null},{"vendor":"wolfi","product":"ruby3.4-elasticsearch","name":"ruby3.4-elasticsearch","label":"ruby3.4-elasticsearch","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/ruby3.4-elasticsearch","purlType":"apk","versions":[{"text":"< 9.5.0-r0","noFixRecorded":false,"fixedIn":null},{"text":"< 9.5.0-r1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 9.5.0-r0 | < 9.5.0-r1","eol":null,"hubHref":null},{"vendor":"wolfi","product":"ruby4.0-elasticsearch","name":"ruby4.0-elasticsearch","label":"ruby4.0-elasticsearch","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/ruby4.0-elasticsearch","purlType":"apk","versions":[{"text":"< 9.5.0-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 9.5.0-r0","eol":null,"hubHref":null},{"vendor":"elastic","product":"elasticsearch","name":"Elasticsearch","label":"elasticsearch","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 9.4.0, ≤ 9.4.3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 9.0.0, ≤ 9.3.7","noFixRecorded":false,"fixedIn":null},{"text":"≥ 8.0.0, ≤ 8.19.18","noFixRecorded":false,"fixedIn":null},{"text":"≥ 8.0.0, < 8.19.19","noFixRecorded":false,"fixedIn":null},{"text":"≥ 9.0.0, < 9.3.8","noFixRecorded":false,"fixedIn":null},{"text":"≥ 9.4.0, < 9.4.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 9.4.0, ≤ 9.4.3 | ≥ 9.0.0, ≤ 9.3.7 | ≥ 8.0.0, ≤ 8.19.18 | ≥ 8.0.0, < 8.19.19 | ≥ 9.0.0, < 9.3.8 | ≥ 9.4.0, < 9.4.4","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"elasticsearch","label":"Elasticsearch","category":"database"}},"hubHref":"/vendor/elastic/elasticsearch"}],"affectedCount":11,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-security-update-esa-2026-74/388577","label":"discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-security-update-esa-2026-74/388577","hostname":"discuss.elastic.co","tags":["WEB","Vendor Advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63263.json","label":"github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63263.json","hostname":"github.com","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63263","label":"nvd.nist.gov/vuln/detail/CVE-2026-63263","hostname":"nvd.nist.gov","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CGA-3WH8-3JVQ-W4X9"]},"timeline":[{"kind":"published","date":"2026-07-21T23:10:49.155Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-22T13:07:01.561Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":26,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T04:40:55.400Z","stale":false,"partial":false}}