Description
Uncaught Exception (CWE-248) in Kibana can lead to a denial of service via Input Data Manipulation (CAPEC-153). An authenticated user holding only the low-privileged feature access required to use the Observability AI Assistant can submit a specially crafted request that produces an unhandled error condition, terminating the Kibana process and denying service to all users and spaces on that instance until it is restarted.
Published: 2026-09-01
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service
Action: Assess Impact
AI Analysis

Impact

An unhandled exception (CWE‑248) in Kibana allows an authenticated user with low‑privileged access to the Observability AI Assistant to submit specially crafted input that triggers an invalid operation and causes the Kibana process to terminate. This results in a denial of service for all users and spaces on the affected instance until the process is restarted.

Affected Systems

The vulnerability affects Elastic Kibana. Specific product versions are not disclosed in the CVE data.

Risk and Exploitability

The CVSS score of 6.5 indicates a moderate severity, and the Epsilons score is unavailable while the vulnerability is not listed in the CISA KEV catalog. The attack requires authenticated access with the minimal feature rights to use the Observability AI Assistant; no additional pre‑conditions are disclosed. Once exploited, the entire Kibana service is halted, causing a service outage until administrators reboot the process or the system is restarted.

Generated by OpenCVE AI on September 2, 2026 at 01:34 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply current Kibana security updates that address the uncaught exception
  • Restrict or disable access to the Observability AI Assistant for untrusted users
  • Monitor Kibana logs for unhandled error patterns and implement automated restarts or high‑availability measures

Generated by OpenCVE AI on September 2, 2026 at 01:34 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 02 Sep 2026 10:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*
cpe:2.3:a:elastic:kibana:9.5.0:*:*:*:*:*:*:*

Wed, 02 Sep 2026 01:00:00 +0000

Type Values Removed Values Added
First Time appeared Elastic
Elastic kibana
Vendors & Products Elastic
Elastic kibana

Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
Description Uncaught Exception (CWE-248) in Kibana can lead to a denial of service via Input Data Manipulation (CAPEC-153). An authenticated user holding only the low-privileged feature access required to use the Observability AI Assistant can submit a specially crafted request that produces an unhandled error condition, terminating the Kibana process and denying service to all users and spaces on that instance until it is restarted.
Title Uncaught Exception in Kibana Leading to Denial of Service
Weaknesses CWE-248
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Subscriptions

Elastic Kibana
cve-icon MITRE

Status: PUBLISHED

Assigner: elastic

Published:

Updated: 2026-09-01T19:37:39.992Z

Reserved: 2026-08-10T11:17:35.481Z

Link: CVE-2026-72644

cve-icon Vulnrichment

Updated: 2026-09-01T19:37:37.053Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-01T20:17:16.733

Modified: 2026-09-02T14:22:14.107

Link: CVE-2026-72644

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-02T01:45:05Z

Weaknesses