CVE-2026-42397: CWE-770 Allocation of Resources Without Limits or Throttling in Elastic Kibana
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.
AI Analysis
Technical Summary
CVE-2026-42397 describes a resource allocation vulnerability (CWE-770) in Kibana where an authenticated user can submit requests with oversized input values to Entity Analytics endpoints. This lack of throttling or limits on resource allocation can cause excessive consumption of resources, resulting in denial of service (CAPEC-130). The vulnerability requires authentication and does not impact confidentiality or integrity but affects availability.
Potential Impact
An authenticated attacker can cause a denial of service by overwhelming Kibana's resources through oversized input values to specific endpoints, rendering the service unavailable. There is no impact on confidentiality or integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider restricting access to affected endpoints and monitoring for unusual resource usage from authenticated users.
CVE-2026-42397: CWE-770 Allocation of Resources Without Limits or Throttling in Elastic Kibana
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.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-42397 describes a resource allocation vulnerability (CWE-770) in Kibana where an authenticated user can submit requests with oversized input values to Entity Analytics endpoints. This lack of throttling or limits on resource allocation can cause excessive consumption of resources, resulting in denial of service (CAPEC-130). The vulnerability requires authentication and does not impact confidentiality or integrity but affects availability.
Potential Impact
An authenticated attacker can cause a denial of service by overwhelming Kibana's resources through oversized input values to specific endpoints, rendering the service unavailable. There is no impact on confidentiality or integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider restricting access to affected endpoints and monitoring for unusual resource usage from authenticated users.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-jpjg-2w23-5jgr
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-42397"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a600aab9c2644c7f8fe049a
Added to database: 07/22/2026, 00:11:23 UTC
Last enriched: 07/22/2026, 00:43:21 UTC
Last updated: 09/01/2026, 03:06:21 UTC
Views: 96
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