CVE-2026-82293: CWE-863 Incorrect Authorization in Elastic Kibana

This vulnerability (CVE-2026-82293) in Elastic Kibana's machine learning feature is due to incorrect authorization (CWE-863). An authenticated user with limited privileges can exploit incorrectly configured access control security levels (CAPEC-180) to consume cluster resources beyond their authorization. This can lead to denial of service conditions by exhausting resources. The CVSS 3.1 vector indicates network attack vector, low attack complexity, requiring low privileges, no user interaction, unchanged scope, no confidentiality or integrity impact, and availability impact only. No vendor advisory or patch is currently available, and no known exploits are reported in the wild.

The impact is limited to availability degradation due to unauthorized resource consumption in the Kibana cluster's machine learning feature. There is no confidentiality or integrity impact. An attacker with valid credentials but limited privileges can cause resource exhaustion, potentially leading to denial of service for legitimate users.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the machine learning features to trusted users only and monitor resource usage closely to detect abnormal consumption patterns.