{"id":"BIT-elasticsearch-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":["CVE-2026-103005"],"modified":"2026-10-14T11:00:04.001587962Z","published":"2026-10-13T06:47:20.777Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*","cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:maven:*:*"]},"references":[{"type":"ADVISORY","url":"https://discuss.elastic.co/t/elasticsearch-8-19-23-9-4-8-9-5-5-security-update-esa-2026-195/390869"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103005"}],"affected":[{"package":{"name":"elasticsearch","ecosystem":"Bitnami","purl":"pkg:bitnami/elasticsearch"},"ranges":[{"type":"SEMVER","events":[{"introduced":"8.12.0"},{"fixed":"8.19.23"},{"introduced":"9.0.0"},{"fixed":"9.4.8"},{"introduced":"9.5.0"},{"fixed":"9.5.5"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/elasticsearch/BIT-elasticsearch-2026-103005.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}],"schema_version":"1.9.0"}