Uncontrolled Resource Consumption in Elasticsearch Bulk Request
CVE-2026-49090 Published on July 1, 2026
Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
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.
Vulnerability Analysis
CVE-2026-49090 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Resource Exhaustion Vulnerability?
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
CVE-2026-49090 has been classified to as a Resource Exhaustion vulnerability or weakness.
Products Associated with CVE-2026-49090
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Affected Versions
Elasticsearch:- Version 8.0.0, <= 8.14.3 is affected.
- Version 7.0.0, <= 7.17.23 is affected.