CVE-2026-49090

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.

Score

CVSS 3.1 6.5 Medium

Status

Analyzed - security@elastic.co

Published

2026-07-01

Last modified

2026-10-25

Weaknesses

CWE-400

Affected products

• Elasticsearch (Elastic)

References

• https://discuss.elastic.co/t/elasticsearch-7-17-24-8-15-0-security-update-esa-2026-52