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CVE-2026-42399

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CVE-2026-42399

Published: May 28, 2026

Modified: May 29, 2026

PUBLISHED

CVSS v3.1

6.5

MEDIUM

Description

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated low-privileged user can cause Kibana to consume exponentially increasing amounts of memory by submitting a specially crafted Timelion visualization expression containing deeply chained function calls. The resulting data structure grows without bound, exhausting available memory and causing the Kibana service to crash and become unavailable to all users.

VendorProductVersions

Elastic

Kibana

affected
8.0.0 - <= 8.19.15
affected
9.0.0 - <= 9.3.4

Weaknesses (CWE)

CWE-400

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

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