What’s Vulnerable › Vulnerabilities
CVE-2026-42397: Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-21 · updated 2026-10-24
- Weakness: CWE-770
Description
Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user can submit a specially crafted request to affected Entity Analytics endpoints containing an oversized input value that causes excessive resource consumption, which may render Kibana unavailable.
Affected products
- Kibana: from 9.3.0 before 9.3.7; from 9.4.0 before 9.4.4 — fixed in 9.3.7, 9.4.4
How to fix
Upgrade to a fixed version: Kibana 9.3.7, 9.4.4. Check the vendor advisory for mitigations.
References
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