Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service
Description:
Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). A user-supplied list of document fields accepted by the Kibana Playground for RAG feature was neither bounded in length nor de-duplicated before it was used to assemble the response for each matching document. A single crafted request could therefore make Kibana build a response far larger than the data it was derived from, and the resulting processing and memory pressure exhausts the resources of the Kibana instance.
Affected Versions:
- All versions from 9.3.0 up to and including 9.3.7
- All versions from 9.4.0 up to and including 9.4.3
Affected Configurations:
All configurations are affected.
Solutions and Mitigations:
The issue is resolved in versions 9.3.8 and 9.4.4.
For Users that Cannot Upgrade:
There are no workarounds for this vulnerability.
Indicators of Compromise (IOC)
No specific indicators of compromise have been identified 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-2026-72674
Problem Type: CWE-770 - Allocation of Resources Without Limits or Throttling
Impact: CAPEC-130 - Excessive Allocation