Resource Management Flaw in Kibana by Elastic
CVE-2026-42397

6.5MEDIUM

Key Information:

Vendor

Elastic
Status
Kibana
Vendor
CVE Published:
21 July 2026

What is CVE-2026-42397?

A vulnerability within Kibana allows an authenticated user to exploit the resource allocation mechanism by submitting a specially crafted request to the Entity Analytics endpoints. This request contains an oversized input value, which can lead to excessive resource consumption. Ultimately, this results in a denial of service condition, making Kibana unavailable and disrupting user operations.

Affected Version(s)

Kibana 9.4.0 <= 9.4.3

Kibana 9.3.0 <= 9.3.6

References

https://discuss.elastic.co/t/kibana-9-3-7-9-4-4-security-...

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

.