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OpenAdvisories
Medium · 6.5 CVE-2026-72645 EUVD-2026-58282GHSA-vgfg-5pqm-8394

Memory Allocation with Excessive Size Value in Elasticsearch Leading to Denial of Service

Published Aug 13, 2026 · Updated Aug 13, 2026 · Assigned by elastic

Description

Memory Allocation with Excessive Size Value (CWE-789) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user holding only read privileges on a single index can submit one small, specially crafted search request that causes an excessively large memory allocation, exhausting the JVM heap and terminating the affected node.

Affected products

VendorProductAffectedFixed
Elastic Elasticsearch 8.0.0 – ≤ 8.19.19, 9.0.0 – ≤ 9.4.4, 9.5.0 —

Advisories 1

References