Improper Validation of Specified Quantity in Input in Kibana Leading to Denial of Service
Priority LOW 29CWE-1284Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Deferred Red Hat: fix deferred
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
Improper Validation of Specified Quantity in Input (CWE-1284) in the Timelion visualization plugin in Kibana can lead Denial of Service via Excessive Allocation (CAPEC-130). The vulnerability allows an authenticated user to send a specially crafted Timelion expression that overwrites internal series data properties with an excessively large quantity value.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00286 21st percentileScored 2026-11-07
Fix Deferred Red Hat: fix deferred
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 | 9.3.0 – 9.3.1; 9.0.0 – 9.2.6; 8.0.0 – 8.19.12 | — | No fix listed | CNA |
- Kibana VendorElastic Affected 9.3.0 – 9.3.1; 9.0.0 – 9.2.6; 8.0.0 – 8.19.12 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 8.19.13; 9.0.0 to before 9.2.7; 9.3.0 to before 9.3.2 | Vulnerable | Elastic |
- cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:* Versions 8.0.0 to before 8.19.13; 9.0.0 to before 9.2.7; 9.3.0 to before 9.3.2 Vulnerable ·Elastic
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Logging Subsystem for Red Hat OpenShift | Affected | No fix yet: Fix deferred |
| Red Hat JBoss Enterprise Application Platform 8 | Affected | No fix yet: Fix deferred |
| Red Hat JBoss Enterprise Application Platform Expansion Pack | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift distributed tracing 3 | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 16.2 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-26940
- 2026-10-03 Alias added: GHSA-xfph-vq69-5ww2
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-2026-26940 · CVE Program
- CVE-2026-26940 · NVD
- FIRST EPSS
- GHSA-xfph-vq69-5ww2 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-26940 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences