{"id":"CVE-2026-103005","title":"Memory Allocation with Excessive Size Value (CWE-789) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130)","summary":"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 …","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-789"],"vendor":"Elastic","product":"Elasticsearch","affected":["Elasticsearch >= 8.12.0 <= 8.19.22","Elasticsearch >= 9.0.0 <= 9.3.8","Elasticsearch >= 9.4.0 <= 9.4.7","Elasticsearch >= 9.5.0 <= 9.5.4"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T20:17:13.597","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-103005","references":[{"url":"https://discuss.elastic.co/t/elasticsearch-8-19-23-9-4-8-9-5-5-security-update-esa-2026-195/390869","label":"security@elastic.co"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-06T19:53:36.232961Z"},"ingestedAt":"2026-10-06T20:16:42.473Z","slug":"CVE-2026-103005","body":"## Overview\n\nMemory 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}