CVE-2026-115706 in Cloud Enterprise
Summary
by MITRE • 10/29/2026
Authorization Bypass Through User-Controlled Key (CWE-639) in Elastic Cloud Enterprise (ECE) can lead to privilege escalation via Privilege Abuse (CAPEC-122). An attacker who controls any host in an ECE installation can obtain credentials that are reserved for other platform roles. These credentials can give the attacker full control of the ECE control plane and of the deployments that it manages.
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Analysis
by VulDB Data Team • 10/29/2026
The vulnerability identified as CWE-639, Authorization Bypass Through User-Controlled Key, represents a critical flaw within Elastic Cloud Enterprise where access controls are improperly enforced due to reliance on keys or identifiers that can be manipulated by an attacker. In this specific context, the security architecture fails to adequately validate whether the entity requesting access possesses the necessary privileges for the targeted resource. Instead of strictly binding permissions to authenticated identities and verifying role-based access rights against a secure authorization store, the system allows credentials associated with one platform role to be used in contexts reserved for other roles. This fundamental design flaw undermines the principle of least privilege, which is essential for maintaining the integrity of multi-tenant cloud environments where distinct operational boundaries must exist between different administrative functions and deployment clusters.
An attacker who has gained control over any single host within an Elastic Cloud Enterprise installation can exploit this weakness to escalate their privileges significantly. By leveraging Privilege Abuse as described in CAPEC-122, the adversary manipulates the system's trust model to obtain credentials intended for other platform roles. This is not merely a case of reading sensitive data but involves actively assuming higher-level administrative capabilities that were never granted to the compromised host or user account. The attacker can extract these privileged credentials from memory, configuration files, or inter-service communication channels where they are stored in plaintext or weakly protected formats due to the flawed authorization logic. This step effectively breaks the isolation between different components of the Elastic Cloud Enterprise architecture, allowing lateral movement and deeper penetration into the control plane infrastructure.
The operational impact of this vulnerability is severe, as it grants the attacker full control over the Elastic Cloud Enterprise control plane and all deployments managed by that instance. With elevated privileges, an adversary can create, modify, or delete clusters, access sensitive data stored within those deployments, alter security configurations to disable logging or monitoring, and potentially deploy malicious software across the entire infrastructure. This level of compromise allows for complete data exfiltration, ransomware deployment, or use of the compromised cloud environment as a pivot point for attacks against other networks connected to it. The ability to assume roles such as superuser or cluster manager means that standard security controls like audit logs may be tampered with or disabled before detection mechanisms can trigger alerts, making incident response and forensic analysis significantly more difficult.
Mitigation strategies must focus on immediate remediation of the underlying code flaw alongside broader architectural improvements to prevent similar authorization bypasses in the future. Elastic has released patches that enforce strict role-based access control checks for all API endpoints and internal service communications involved in credential handling. Administrators should apply these updates immediately to close the privilege escalation vector. Additionally, organizations should implement network segmentation to limit lateral movement within their cloud infrastructure, ensuring that compromise of a single host does not automatically provide access to critical management planes. Regular audits of IAM policies and enforcement of least-privilege principles across all service accounts are essential to reduce the attack surface. Monitoring for anomalous API calls involving credential retrieval or role changes can also help detect exploitation attempts in real time, providing an additional layer of defense against this type of authorization bypass vulnerability.