Uncontrolled Resource Consumption in Kibana by Elastic
CVE-2026-63139

6.5MEDIUM

Key Information:

Vendor

Elastic
Status
Kibana
Vendor
CVE Published:
21 July 2026

What is CVE-2026-63139?

An uncontrolled resource consumption flaw in Kibana's Canvas functionality allows an authenticated low-privileged user to send a specially crafted request, which can exhaust server resources. This exploitation may cause the Kibana server process to crash, leading to a denial of service for all users relying on that Kibana instance.

Affected Version(s)

Kibana 8.0.0 <= 8.19.18

Kibana 9.4.0 <= 9.4.3

Kibana 9.3.0 <= 9.3.7

References

https://discuss.elastic.co/t/kibana-8-19-19-9-3-8-9-4-4-s...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.