{"id":"CVE-2026-56143","summary":"Allocation of Resources Without Limits or Throttling in Elasticsearch Leading to Denial of Service","details":"Allocation of Resources Without Limits or Throttling (CWE-770) in Elasticsearch can lead to a denial of service via Excessive Allocation (CAPEC-130). A user with elevated privileges can submit a specially crafted request that causes excessive memory consumption, which may render the affected node unavailable.","modified":"2026-09-06T03:46:11.962003580Z","published":"2026-09-01T19:20:10.864Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56143.json","unresolved_ranges":[{"extracted_events":[{"introduced":"8.0.0"},{"last_affected":"8.19.19"},{"introduced":"9.0.0"},{"last_affected":"9.2.8"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"elastic","cwe_ids":["CWE-770"]},"references":[{"type":"WEB","url":"https://discuss.elastic.co/t/elasticsearch-8-19-20-9-3-0-security-update-esa-2026-47/390084"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56143.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56143"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/elastic/elasticsearch","events":[{"introduced":"1b6a7ece17463df5ff54a3e1302d825889aa1161"},{"fixed":"91f5381ece296ddc32b554f997269478b9224af8"},{"introduced":"112859b85d50de2a7e63f73c8fc70b99eea24291"},{"fixed":"17b451d8979a29e31935fe1eb901310350b30e62"}],"database_specific":{"extracted_events":[{"introduced":"8.0.0"},{"fixed":"8.19.20"},{"introduced":"9.0.0"},{"fixed":"9.3.0"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56143.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"}]}