CVE-2026-49090 MEDIUM

CVE-2026-49090: Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service

Vendor Elastic
Product Elasticsearch
Weakness CWE-400
Published July 1, 2026
Last update July 1, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user can submit a specially crafted bulk request that causes sustained high CPU consumption, which can render the affected node unable to process requests.

Key dates

02Disclosure timeline

July 1, 2026 CVE published