{"schemaVersion":3,"id":"CVE-2026-63140","aliases":["CGA-3cxx-v6cc-38pg","CGA-9j5h-2g3p-qg2f","CGA-f3p3-4cwc-jr7r","CGA-g4hm-q8f8-c7x9","CGA-hfpj-qm48-4v5q","CGA-hmwp-x3pj-fgxm","CGA-qhfc-q5qf-g32j","CGA-vvf8-9vjp-qqx3","CGA-3wjg-m39f-q69g","CGA-gv5q-gh79-375w","CGA-p6fm-gg6j-5vcg","CGA-v8pr-p5v5-726p"],"status":"published","duplicateOf":null,"title":null,"description":"Reachable Assertion (CWE-617) in Elasticsearch can lead to denial of service via Input Data Manipulation (CAPEC-153). A specially crafted search request containing a null value in a specific query clause causes an internal assertion to be raised during query parsing. Because Elasticsearch treats assertion failures as fatal errors, this terminates the affected node process. A low-privileged authenticated user with read access to at least one index can exploit this condition with a single request to cause a node to terminate, disrupting search availability. In a single-node deployment this fully stops Elasticsearch; in a multi-node cluster it reduces cluster capacity for each affected node.","dates":{"published":"2026-07-21T21:04:01.143Z","modified":"2026-07-22T19:40:22.260Z","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":0.0042,"percentile":0.34972,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0.18,"baselineDate":"2026-09-20T00:00:00.000Z","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":0.0042,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0042,"percentile":0.34972}],"last30":[{"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":0.0042,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0042,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0042,"percentile":0.34972}]},"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-617","name":"Reachable Assertion","description":"The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/617.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":"≥ 9.0.0, ≤ 9.3.7","noFixRecorded":false,"fixedIn":null},{"text":"≥ 9.4.0, ≤ 9.4.3","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":"≥ 9.0.0, ≤ 9.3.7 | ≥ 9.4.0, ≤ 9.4.3 | ≥ 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-2026-64/388565","label":"discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-security-update-esa-2026-64/388565","hostname":"discuss.elastic.co","tags":["WEB","Vendor Advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63140.json","label":"github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63140.json","hostname":"github.com","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63140","label":"nvd.nist.gov/vuln/detail/CVE-2026-63140","hostname":"nvd.nist.gov","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CGA-5WCF-34J4-C7MH"]},"timeline":[{"kind":"published","date":"2026-07-21T21:04:01.143Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-22T19:40:22.260Z","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":"2026-10-20T23:37:19.329Z","stale":false,"partial":false}}