{"id":"CVE-2026-63136","summary":"Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service","details":"Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A user with search privileges can submit a specially crafted search request that causes a data node to exhaust available heap memory, resulting in node unavailability and cluster degradation. An attacker could leverage this vulnerability to cause cluster downtime requiring manual intervention to restore service.","aliases":["BIT-elasticsearch-2026-63136"],"modified":"2026-08-09T08:05:10.361575Z","published":"2026-07-21T20:20:07.409Z","database_specific":{"cna_assigner":"elastic","cwe_ids":["CWE-400"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63136.json","unresolved_ranges":[{"extracted_events":[{"introduced":"8.0.0"},{"last_affected":"8.19.14"},{"introduced":"9.3.0"},{"last_affected":"9.3.3"},{"introduced":"9.0.0"},{"last_affected":"9.2.8"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"WEB","url":"https://discuss.elastic.co/t/elasticsearch-8-19-15-9-2-9-9-3-4-security-update-esa-2026-60/388559"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63136.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63136"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/elastic/elasticsearch","events":[{"introduced":"1b6a7ece17463df5ff54a3e1302d825889aa1161"},{"fixed":"d9256c374e649e04ff0fa2dafd43402d35a3fb3a"},{"introduced":"17b451d8979a29e31935fe1eb901310350b30e62"},{"fixed":"69a3e6c50ebb57a1fdbf3f235be9f11061ac7d86"}],"database_specific":{"cpe":"cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"8.0.0"},{"fixed":"8.19.15"},{"introduced":"9.3.0"},{"fixed":"9.3.4"}],"source":"CPE_RANGE"}}],"versions":["v9.3.3","v9.3.2","v9.3.1","v9.3.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63136.json","vanir_signatures_modified":"2026-08-09T08:05:10Z","vanir_signatures":[{"source":"https://github.com/elastic/elasticsearch/commit/69a3e6c50ebb57a1fdbf3f235be9f11061ac7d86","target":{"file":"x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/analysis/AnalyzerTests.java","function":"testPromqlQueryWithConflictingTsTypesMarksFieldUnsupported"},"deprecated":false,"digest":{"function_hash":"84433789544010315812246774005552675939","length":601},"id":"CVE-2026-63136-0b400218","signature_type":"Function","signature_version":"v1"},{"deprecated":false,"digest":{"line_hashes":["234163232951028422978085367395355015356","336324895495804197828852394756872939000","283658986481949763179231452461160578552","90983762437915623732177975884360609784","201530536742802531269305682045005216476","171852364269482810748858037036789861963","314462254603794552743574645931750044692","295350290235740750339653402330741971858","214199429833385077961909239085936134582","165345166082600797091855140208265768837","68922472427642386306783373118438221572"],"threshold":0.9},"id":"CVE-2026-63136-53609d75","signature_type":"Line","signature_version":"v1","source":"https://github.com/elastic/elasticsearch/commit/69a3e6c50ebb57a1fdbf3f235be9f11061ac7d86","target":{"file":"x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/analysis/AnalyzerTests.java"}}]}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}