CVE-2026-56145 — Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service

CVE-2026-56145

Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service PUBLISHED

Description (CNA)

Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A low-privileged authenticated user with permission to execute EQL sequence queries against an index they control can send a specially crafted query that triggers excessive memory consumption, causing the Elasticsearch node to crash.

Affected (CNA)

Vendor / product	Versions
Elastic / Elasticsearch	affected 9.4.0 through 9.4.3; affected 8.0.0 through 8.19.17; affected 9.0.0 through 9.3.6

CWE

CWE-400

References

https://discuss.elastic.co/t/elasticsearch-8-19-18-9-3-7-9-4-4-security-update-esa-2026-57/388556

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.