VULNERABILITY INTELLIGENCE

CVE-2026-72656

CVSS score6.5 MEDIUM
EPSS probability0.42%
CISA KEVNot currently listed
Published2026-08-13
Last modified2026-09-04
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

Memory Allocation with Excessive Size Value (CWE-789) in the ES|QL query processing of Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user able to submit ES|QL queries could send a specially crafted query whose evaluation allocates an unbounded amount of heap memory, exhausting the available heap on the receiving node and causing the node to become unavailable.

Weakness classification

  • security@elastic.co: CWE-789

Primary references