CVE-2026-63143
Summary
by MITRE • 07/22/2026
Missing Authorization (CWE-862) in Kibana can lead to unauthorized information disclosure via Privilege Abuse (CAPEC-122). A user with limited feature privileges can access workflow execution outputs in their Kibana space without the authorization required to do so through the documented API. 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.
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Analysis
by VulDB Data Team • 07/22/2026
This vulnerability represents a critical authorization flaw in the elastic kibana platform where users with restricted feature privileges can bypass intended access controls to obtain sensitive workflow execution outputs within their designated kibana space. The issue stems from insufficient validation of user permissions when accessing workflow-related data, creating an unauthorized information disclosure scenario that directly violates fundamental security principles. The vulnerability is categorized as CWE-862 which specifically addresses missing authorization checks and falls under the broader category of privilege abuse attacks as defined by CAPEC-122. This allows malicious actors or compromised users with minimal privileges to escalate their access and retrieve data that should be restricted to authorized personnel only.
The technical implementation flaw occurs when kibana processes workflow execution requests where the system fails to properly validate whether the requesting user possesses adequate permissions to access the specific workflow outputs they are attempting to retrieve. This authorization bypass enables users to access results from connected data sources through workflow steps, potentially exposing sensitive information that would normally be protected by proper access controls. The vulnerability manifests when kibana's permission model does not adequately enforce the principle of least privilege, allowing users to traverse unauthorized data pathways within their own kibana space.
From an operational perspective, this vulnerability creates significant risk for organizations using kibana as part of their security monitoring and analytics infrastructure. The unauthorized access to workflow outputs can expose sensitive data from integrated systems, including but not limited to database query results, system logs, network traffic analysis, or other confidential information processed through automated workflows. Attackers could leverage this weakness to gather intelligence about internal systems, identify potential attack vectors, or access proprietary data that should remain restricted to authorized personnel only. The impact extends beyond simple data exposure as it undermines the integrity of the security monitoring environment itself.
Organizations should implement immediate mitigations including updating kibana to versions that address this authorization flaw, reviewing and enforcing proper user permission assignments, implementing additional monitoring for unusual workflow access patterns, and conducting comprehensive privilege audits. Security teams must also consider implementing network segmentation controls and additional logging mechanisms to detect unauthorized access attempts. The vulnerability highlights the importance of maintaining robust authorization controls within security platforms and demonstrates how seemingly minor permission gaps can lead to significant information disclosure risks. Organizations should follow NIST SP 800-53 authorization and access control requirements to ensure proper implementation of least privilege principles and maintain compliance with security standards such as ISO 27001 and SOC 2.