CVE-2026-63261

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.

Score

CVSS 3.1 6.5 Medium

Status

Analyzed - security@elastic.co

Published

2026-07-21

Last modified

2026-10-24

Weaknesses

CWE-400

Affected products

• Kibana (Elastic)

References

• https://discuss.elastic.co/t/kibana-8-19-19-9-3-8-9-4-4-security-update-esa-2026-72/388575