# CVE-2026-78584

## Summary

- **CVE ID:** CVE-2026-78584
- **Severity:** MEDIUM
- **CVSS Score:** 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
- **CWE:** CWE-204
- **Published:** Sep 2, 2026
- **Last Modified:** Sep 2, 2026

## Description

Observable Response Discrepancy (CWE-204) in the Kibana Osquery feature can lead to information disclosure via Query System for Information (CAPEC-54). An authenticated user holding Osquery live-query privileges could determine whether a scheduled query identifier exists in a Kibana space they are not authorized to access.

## Affected Products

- Elastic — Kibana (9.4.0)

## References

- [CNA](https://discuss.elastic.co/t/kibana-9-4-4-security-update-esa-2026-161/390115)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.22%
- **EPSS Percentile:** 12.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._