CVE-2026-95771 in Fabric Composer
Summary
by MITRE • 11/03/2026
An authenticated information disclosure vulnerability exists in an API endpoint of HPE Networking Fabric Composer. Successful exploitation could allow an authenticated remote attacker to obtain limited information about the affected system.
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Analysis
by VulDB Data Team • 11/03/2026
The identified security flaw resides within a specific application programming interface endpoint associated with Hewlett Packard Enterprise Networking Fabric Composer, presenting a classic case of insecure direct object references or improper access control mechanisms that lead to unauthorized data exposure. This vulnerability is classified under Common Weakness Enumeration categories such as CWE-200 which covers Exposure of Sensitive Information to an Unauthorized Actor and potentially CWE-862 regarding Missing Authorization Checks within the application logic. The core technical deficiency lies in the failure of the server-side validation routines to adequately verify whether the authenticated user possesses sufficient privileges or specific permissions required to access the data returned by this particular endpoint, thereby allowing any valid credential holder to retrieve information that should be restricted based on their role or context.
From an operational perspective, while the requirement for authentication mitigates the risk of unauthenticated remote exploitation, it does not eliminate the threat entirely since many enterprise environments suffer from weak identity management practices where users may hold higher privileges than necessary due to privilege creep or misconfigured roles. An attacker who has obtained valid credentials through phishing, credential stuffing, or internal compromise can leverage this flaw to extract sensitive system details which might include network topology maps, configuration snippets, user session data, or other metadata that aids in further reconnaissance activities. This information disclosure serves as a critical enabler for subsequent attack vectors such as privilege escalation attacks where the gathered intelligence helps an adversary identify high-value targets within the infrastructure or craft more precise exploits against specific components of the fabric composer system.
The impact extends beyond mere confidentiality loss, as the availability of internal network architecture details can significantly lower the barrier to entry for lateral movement within a compromised environment. Attackers often utilize such disclosures to map out trust relationships and identify potential pivot points that were previously unknown or obscured by default security configurations. In the context of HPE Networking Fabric Composer which manages virtualized networking resources, exposure of underlying infrastructure states could allow an adversary to understand how traffic is segmented or routed, potentially facilitating man-in-the-middle attacks or denial-of-service strategies targeted at critical network segments if combined with other vulnerabilities in adjacent systems.
To mitigate this risk, immediate remediation should focus on implementing strict role-based access control checks within the API endpoint logic ensuring that each request is validated against a comprehensive permission matrix before any data is serialized and returned to the client. Security architects must also enforce the principle of least privilege across all user accounts interacting with the Fabric Composer interface to minimize the blast radius if credentials are compromised. Additionally, deploying web application firewalls with rules tuned to detect anomalous access patterns or excessive querying of sensitive endpoints can provide an additional layer of defense while patching efforts are underway. Regular security audits and penetration testing focused on authorization bypasses will help identify similar weaknesses in other API endpoints before they can be exploited by malicious actors seeking to gain deeper insights into the protected network infrastructure.