Is CVE-2026-63261 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-63261?

CVE-2026-63261 has a CVSS v3 severity of MEDIUM (6.5).

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CVE-2026-63261

Description

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). A low-privileged authenticated user can send a specially crafted request to a Kibana machine learning feature, causing the server to exhaust available memory and become unavailable to all users.