CVE-2026-42399

published 2026-05-28

CVE-2026-42399: Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated low-privileged user…

Priority P4 33 medium 6.5 CVSS 3.1

AV N AC L PR L UI N S U C N I N A H

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.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
elastic	kibana	>= 8.0.0 < 8.19.16	8.19.16
elastic	kibana	8.0.0 – 8.19.15	—
elastic	kibana	>= 9.0.0 < 9.3.5	9.3.5
elastic	kibana	9.0.0 – 9.3.4	—

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CWE-400