CVE-2026-63143 Elastic CVE debrief

Who should care

Users of Kibana with limited feature privileges, administrators of Kibana instances, and security teams monitoring for potential unauthorized access should be aware of this vulnerability. Affected parties should review and update user privileges, monitor for suspicious activity, and implement additional security controls to prevent privilege abuse. Security teams should prioritize Kibana instances for vulnerability assessment and remediation, focusing on ensuring proper authorization for accessing workflow execution outputs.

Technical summary

The vulnerability, identified as CWE-862 (Missing Authorization), allows users with limited privileges in Kibana to access workflow execution outputs without proper authorization. This can lead to unauthorized information disclosure via Privilege Abuse (CAPEC-122). The accessible data may include sensitive information returned by workflow steps, such as results from connected data sources that the caller would not otherwise be authorized to access. The issue arises from insufficient authorization checks in Kibana's workflow execution output access controls, enabling users with limited feature privileges to exploit this weakness.

Defensive priority

Medium priority due to the potential for unauthorized information disclosure.

Recommended defensive actions

• Review and update Kibana user privileges to ensure proper authorization for accessing workflow execution outputs.
• Monitor Kibana logs for unauthorized access attempts.
• Implement additional security controls to prevent privilege abuse.
• Conduct a thorough review of Kibana instance configurations to identify potential vulnerabilities.
• Perform regular security audits to detect and address any unauthorized access patterns.
• Develop and implement a patch management process to ensure timely application of security updates.
• Verify the effectiveness of compensating controls for exposed systems.

Evidence notes

The CVE record was published on 2026-07-21T23:18:02.230Z and was last modified on 2026-07-22T20:37:38.603Z. The NVD entry is currently Awaiting Analysis. Evidence from the CVE record and NVD entry indicates a potential for unauthorized information disclosure via Privilege Abuse (CAPEC-122) in Kibana. However, detailed analysis of affected systems, exploitation methods, and specific data sources accessed without authorization is limited. Defenders should verify Kibana instance configurations, monitor for suspicious access patterns, and review workflow execution outputs for potential sensitive information exposure.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.