CVE-2026-103005

published 2026-10-06

CVE-2026-103005: Memory Allocation with Excessive Size Value (CWE-789) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated…

Priority P3 35 medium 6.5 CVSS 3.1

AV N AC L PR L UI N S U C N I N A H

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.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
elastic	elasticsearch	8.12.0 – 8.19.22	—
elastic	elasticsearch	9.0.0 – 9.3.8	—
elastic	elasticsearch	9.4.0 – 9.4.7	—
elastic	elasticsearch	9.5.0 – 9.5.4	—

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CWE-789