AUGUST 14, 2026
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Case File

CVE-2026-72656

MEDIUM · CVSS 6.5 EPSS 0.29%

Source: NVD + CISA KEV + EPSS · Published 2026-08-13 · Last synced 2026-08-14

CyberRota Analysis

AI-Generated

Elasticsearch is vulnerable to a denial of service attack due to excessive memory allocation in its ES|QL query processing, which can be triggered by an authenticated user submitting a specially crafted query. This flaw allows for unbounded heap memory allocation, potentially exhausting resources and rendering the affected node unavailable. Organizations using Elasticsearch should prioritize remediation to prevent potential service disruptions.

CVE
CVE-2026-72656
Severity
MEDIUM
CVSS
6.5
EPSS
0.29%

Original NVD 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.