{"id":"CVE-2026-72683","state":"PUBLISHED","title":"Uncontrolled Recursion in Elasticsearch Leading to Denial of Service","description":"A flaw in Elasticsearch allows an authenticated user with the privileges required to invoke the simulate pipeline API endpoint (https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-ingest-simulate) to submit a request that causes a self-referential data structure to be created. When a specific internal component later processes that structure, the operation recurses without bound and raises a fatal error that is not handled by the surrounding execution path, terminating the affected node process and resulting in a denial of service.","publishedAt":"2026-08-13T19:10:51.461Z","updatedAt":"2026-08-13T20:35:24.324Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"elastic"},"assigner":"elastic","products":["Elastic Elasticsearch"],"affected":[{"vendor":"Elastic","product":"Elasticsearch","defaultStatus":"unaffected","versions":[{"version":"5.0.0","status":"affected","lessThanOrEqual":"8.19.18","versionType":"semver"},{"version":"9.3.0","status":"affected","lessThanOrEqual":"9.3.7","versionType":"semver"},{"version":"9.4.0","status":"affected","lessThanOrEqual":"9.4.3","versionType":"semver"}]}],"references":["https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-security-update-esa-2026-75/389496"],"weaknesses":["CWE-674"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72683.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72683","state":"PUBLISHED","datePublished":"2026-08-13T19:10:51.461Z","dateUpdated":"2026-08-13T20:35:24.324Z","assignerShortName":"elastic","assignerOrgId":"271b6943-45a9-4f3a-ab4e-976f3fa05b5a","dateReserved":"2026-08-10T11:17:58.731Z"},"containers":{"cna":{"title":"Uncontrolled Recursion in Elasticsearch Leading to Denial of Service","descriptions":[{"lang":"en","value":"A flaw in Elasticsearch allows an authenticated user with the privileges required to invoke the simulate pipeline API endpoint (https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-ingest-simulate) to submit a request that causes a self-referential data structure to be created. When a specific internal component later processes that structure, the operation recurses without bound and raises a fatal error that is not handled by the surrounding execution path, terminating the affected node process and resulting in a denial of service."}],"affected":[{"vendor":"Elastic","product":"Elasticsearch","defaultStatus":"unaffected","versions":[{"version":"5.0.0","status":"affected","lessThanOrEqual":"8.19.18","versionType":"semver"},{"version":"9.3.0","status":"affected","lessThanOrEqual":"9.3.7","versionType":"semver"},{"version":"9.4.0","status":"affected","lessThanOrEqual":"9.4.3","versionType":"semver"}]}],"references":[{"url":"https://discuss.elastic.co/t/elasticsearch-8-19-19-9-3-8-9-4-4-security-update-esa-2026-75/389496"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-674","description":"CWE-674 Uncontrolled Recursion","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"elastic","orgId":"271b6943-45a9-4f3a-ab4e-976f3fa05b5a","dateUpdated":"2026-08-13T19:10:51.461Z"},"source":{"discovery":"Elastic"},"x_generator":{"engine":"Elastic CVE Publisher 1.0.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-13T20:22:50.402911Z","id":"CVE-2026-72683","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-13T20:35:24.324Z"}}]}}}