Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
Priority LOW 29CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-400.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00332 26th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Elastic | Kibana | 9.4.0 – 9.4.1; 9.0.0 – 9.3.4; 8.0.0 – 8.19.15 | — | No fix listed | CNA |
- Kibana VendorElastic Affected 9.4.0 – 9.4.1; 9.0.0 – 9.3.4; 8.0.0 – 8.19.15 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:* | 8.0.0 to before 8.19.16; 9.0.0 to before 9.3.5; 9.4.0 to before 9.4.2 | Vulnerable | Elastic |
- cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:* Versions 8.0.0 to before 8.19.16; 9.0.0 to before 9.3.5; 9.4.0 to before 9.4.2 Vulnerable ·Elastic
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-42400
- 2026-10-03 Alias added: GHSA-mhgf-jqhm-p7p3
References
More Elastic Kibana vulnerabilities
- TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
- TI-2018-12328 Kibana versions before 6.4.3 and 5.6.13 contain an arbitrary file inclusion flaw in the… CVSS 3.0CRITICAL 9.8
- TI-2025-18692 Kibana arbitrary code execution via prototype pollution CVSS 3.1CRITICAL 9.8
- TI-2020-05660 Code injection in Elastic Kibana CVSS 3.1HIGH 8.8
- TI-2024-24803 Deserialization of untrusted data in Elastic Kibana CVSS 3.1CRITICAL 9.9
- TI-2024-24800 Kibana arbitrary code execution via YAML deserialization CVSS 3.1CRITICAL 9.1
Sources
- CVE-2026-42400 · CVE Program
- CVE-2026-42400 · NVD
- FIRST EPSS
- GHSA-mhgf-jqhm-p7p3 · GitHub Advisory Database · CC BY 4.0
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