{"id":"CVE-2026-103005","summary":"Memory Allocation with Excessive Size Value in Elasticsearch Leading to Denial of Service","details":"Memory Allocation with Excessive Size Value (CWE-789) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user with connector management privileges could cause the cluster to allocate an uncontrolled amount of memory when connector resources with an excessively large `description` field are created and subsequently accessed, exhausting available heap memory and crashing the affected node.","aliases":["BIT-elasticsearch-2026-103005"],"modified":"2026-10-13T08:25:58.238979358Z","published":"2026-10-06T19:31:47.862Z","database_specific":{"unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"8.12.0"},{"last_affected":"8.19.22"},{"introduced":"9.0.0"},{"last_affected":"9.3.8"},{"introduced":"9.4.0"},{"last_affected":"9.4.7"},{"introduced":"9.5.0"},{"last_affected":"9.5.4"}]}],"cna_assigner":"elastic","cwe_ids":["CWE-789"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103005.json"},"references":[{"type":"WEB","url":"https://discuss.elastic.co/t/elasticsearch-8-19-23-9-4-8-9-5-5-security-update-esa-2026-195/390869"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103005.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103005"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/elastic/elasticsearch","events":[{"introduced":"112859b85d50de2a7e63f73c8fc70b99eea24291"},{"last_affected":"171dd53e53c29b91f45d2d87857a3f74db48cca5"}],"database_specific":{"source":"CPE_RANGE","cpe":"cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"9.0.0"},{"last_affected":"9.3.8"}]}}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-103005.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}