CVE-2026-49089

Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service

State: Published
Severity: 6.5 Medium
Published: Aug 13, 2026
Updated: Aug 13, 2026
Reserved: May 27, 2026

Description

Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). A query expression accepted by a connector reporting operation was processed without any limit on its size, and an oversized expression caused the Kibana process to spend an unbounded amount of time evaluating it. An authenticated user with read-only privileges was able to send a single request that left Kibana unable to serve any user until the process was restarted.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	elastic

Weaknesses

CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
KibanaElastic	8.0.0 through 8.19.19Affected 9.0.0 through 9.4.4Affected

References

https://discuss.elastic.co/t/kibana-8-19-20-9-4-5-security-update-esa-2026-137/389511

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