CVE-2026-42400
Last modified
CVE-2026-42400 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user can send a specially crafted compressed request payload that is processed prior to authorization checks, causing excessive memory and CPU resource consumption that can result in a Kibana instance becoming unresponsive or crashing.. EPSS estimates a 0.30% chance of exploitation in the next 30 days.
Description
Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user can send a specially crafted compressed request payload that is processed prior to authorization checks, causing excessive memory and CPU resource consumption that can result in a Kibana instance becoming unresponsive or crashing.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Elastic | Kibana | >= 8.0.0, < 8.19.16 |
| Elastic | Kibana | >= 9.0.0, < 9.3.5 |
| Elastic | Kibana | >= 9.4.0, < 9.4.2 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-42400?
How severe is CVE-2026-42400?
How do I fix CVE-2026-42400?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-42390An invalid zone might pass ZONEMD validation while it should…5.3
- CVE-2026-42396Insufficient Validation of Member Zone Data May Cause Catalo…6.5
- CVE-2026-42397Allocation of Resources Without Limits or Throttling (CWE-77…6.5
- CVE-2026-42398Server-Side Request Forgery (CWE-918) in Kibana allows authe…7.7
- CVE-2026-42399Uncontrolled Resource Consumption (CWE-400) in Kibana can le…6.5
- CVE-2026-4240A vulnerability was determined in Open5GS up to 2.7.6. The a…7.5
- CVE-2026-42401Improper Neutralization of Input During Web Page Generation …5.4
- CVE-2026-42402Apache Neethi is vulnerable to a Denial of Service attack th…7.5
- CVE-2026-42403Apache Neethi does not properly detect circular references i…7.5
- CVE-2026-42404Apache Neethi does not impose any restrictions on URIs when …7.2
- CVE-2026-42406A vulnerability exists in BIG-IP and BIG-IQ systems where a …8.7
- CVE-2026-42408When BIG-IP DNS is provisioned, a vulnerability exists in an…6.7
Are you affected by CVE-2026-42400?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST