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CVE-2026-72656

nvd nist
Published: Aug 13, 2026Modified: Sep 4, 2026

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6.5
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Exploitability: 2.8 / Impact: 3.6
Source: security@elastic.co (Secondary)

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.

Affected (1)

Elastic
1 product
Elasticsearch
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Elasticsearch
From 8.11.0 to 8.18.0

Related CWEs

CWE-789
Memory Allocation with Excessive Size Value
The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.

References (1)

Source: security@elastic.co
Vendor Advisory

Timeline

No history available yet.