Denial of Service Vulnerability in Kibana by Elastic
CVE-2026-72663

6.5MEDIUM

Key Information:

Vendor

Elastic
Status
Kibana
Vendor
CVE Published:
13 August 2026

What is CVE-2026-72663?

An inefficient algorithmic complexity vulnerability in Kibana allows attackers to execute specially crafted deeply nested expressions. This can manipulate input data, leading to denial of service. When processed, these expressions create a disproportionate load on the system, consuming Kibana's request-processing thread indefinitely. As a result, Kibana becomes unresponsive to any additional requests until the service is manually restarted.

Affected Version(s)

Kibana 8.0.0 <= 8.19.19

Kibana 9.0.0 <= 9.4.4

References

https://discuss.elastic.co/t/kibana-8-19-20-and-9-4-5-sec...

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

.