Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130).
Affected Versions:
- 8.x: All versions from 8.0.0 up to and including 8.19.20
- 9.x:
- All versions from 9.0.0 up to and including 9.4.5
- All versions from 9.5.0 up to and including 9.5.2
Affected Configurations:
All configurations with analytical aggregation search capabilities enabled.
Solutions and Mitigations:
The issue is resolved in versions 8.19.21, 9.4.6, 9.5.3.
For Users that Cannot Upgrade:
There are no workarounds for this vulnerability.
Elastic Cloud Serverless
Due to our continuous deployment and patching model, the vulnerability described in this security advisory was remediated in our Elastic Cloud Serverless offering before the public disclosure.
Severity: CVSSv3.1: Medium ( 6.5 ) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVE ID: CVE-2026-82294
Problem Type: CWE-400 - Uncontrolled Resource Consumption
Impact: CAPEC-130 - Excessive Allocation