Incorrect Authorization in Kibana Leading to Denial of Service
Incorrect Authorization (CWE-863) in Kibana can lead to denial of service via Exploiting Incorrectly Configured Access Control Security Levels (CAPEC-180).
Affected Versions:
- 8.x: All versions from 8.0.0 up to and including 8.19.20
- 9.x:
- All versions from 9.0.0 up to and including 9.4.5
- All versions from 9.5.0 up to and including 9.5.2
Affected Configurations:
All configurations with Fleet and agent communication message signing enabled.
Solutions and Mitigations:
The issue is resolved in versions 8.19.21, 9.4.6, 9.5.3.
For Users that Cannot Upgrade:
There are no workarounds for this vulnerability.
Elastic Cloud Serverless
Due to our continuous deployment and patching model, the vulnerability described in this security advisory was remediated in our Elastic Cloud Serverless offering before the public disclosure.
Severity: CVSSv3.1: Medium ( 4.3 ) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVE ID: CVE-2026-82298
Problem Type: CWE-863 - Incorrect Authorization
Impact: CAPEC-180 - Exploiting Incorrectly Configured Access Control Security Levels