Description

Vulnerabilities in the API of HPE Networking Fabric Composer could allow an authenticated low privilege operator user to access some information beyond their privilege level. Successful exploitation could allow an attacker to obtain limited information and/or make limited changes beyond what is authorized by the user's existing privilege level.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "5.4",
  "pubDate": "2026-09-01T20:17:21.110Z",
  "pubdate": "2026-09-01T20:17:21.110Z",
  "executiveSummary": "A privilege escalation vulnerability exists within the API of HPE Networking Fabric Composer that allows authenticated low-privilege operator users to exceed their defined authorization boundaries.\nThe vulnerability allows an attacker to access sensitive information and perform unauthorized modifications that should be restricted based on their existing privilege level.\nThis represents a significant security flaw where the application fails to adequately enforce role-based access control (RBAC) mechanisms during API request processing.\nSuccessful exploitation requires the attacker to have valid, albeit low-level, authenticated access to the system. Once authenticated, the attacker can leverage the flawed API endpoints to interact with resources or functions normally reserved for higher-privileged accounts.\nThe impact includes unauthorized information disclosure and the potential for configuration changes, which could compromise the integrity and confidentiality of the networking fabric environment.\nThis vulnerability highlights a critical breakdown in authorization enforcement within the product's API framework, necessitating immediate attention to ensure proper privilege scoping.",
  "technicalDetails": "The vulnerability resides within the API request handling logic of HPE Networking Fabric Composer, which suffers from improper authorization enforcement. The root cause is a failure in the backend to validate the session privilege level against the requested action or data access at the endpoint level.\nThe exploitation method involves an authenticated low-privilege user crafting specific API requests that the application processes without correctly verifying if the user possesses the necessary administrative or privileged role to perform said action or access said data.\nThe attack flow follows a structured path: First, the attacker must gain access to the system using valid credentials assigned to a low-privilege operator account. Second, the attacker performs reconnaissance on the API to identify endpoints that are not properly protected by the server-side RBAC engine. Third, the attacker initiates requests to these vulnerable endpoints. The server, failing to perform a secondary, robust authorization check for these specific functions, processes the request and returns data or executes commands that exceed the caller's intended security context.\nThe vulnerable component is the centralized API gateway/controller within HPE Networking Fabric Composer responsible for mediating user requests and interfacing with the underlying management services. Because the system trusts the incoming authenticated request without re-validating the user's effective permissions for every specific API call, the integrity of the authorization boundary is lost.\nThe post-exploitation impact allows for an escalation of privilege from a standard 'operator' to functions intended for higher-level administrators. This may result in the unauthorized retrieval of configuration data, system logs, or sensitive infrastructure details. Furthermore, if the API allows for state-changing operations (such as POST, PUT, or DELETE methods) without proper authorization, the attacker could modify network fabric configurations, leading to potential operational disruption, bypass of security policies, or unauthorized access to broader network segments managed by the controller.\nNetwork exposure is defined by the accessibility of the API management interface. The vulnerability is highly relevant to environments where the management plane is accessible to users with limited roles, as the lack of granular, service-side authorization allows these users to become 'confused deputies' or direct attackers against the API's protected resources."
}