CVE-2026-95741 in Fabric Composer
Summary
by MITRE • 11/03/2026
A missing integrity verification vulnerability exists in the API of HPE Networking Fabric Composer. Successful exploitation could allow a low-privileged authenticated attacker to gain elevated privileges on the affected system.
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Analysis
by VulDB Data Team • 11/03/2026
The identified security flaw resides within the application programming interface (API) of Hewlett Packard Enterprise Networking Fabric Composer, specifically involving a critical absence of integrity verification mechanisms for incoming requests or data payloads. This architectural deficiency means that the software fails to validate whether the information received from clients has been altered in transit or originates from an unauthorized source. In secure system design, integrity checks such as cryptographic signatures, message authentication codes, or strict schema validation are essential to ensure that processed data matches its intended state and origin. Without these safeguards, the application operates on a trust model that is overly permissive regarding input validity, creating a significant attack surface for malicious actors who can manipulate request parameters without detection by the server-side logic.
From an operational perspective, this vulnerability allows a low-privileged authenticated attacker to bypass standard access controls and execute actions with elevated privileges. The core impact stems from the ability of the attacker to craft specific API requests that exploit the lack of verification, effectively tricking the system into performing administrative or privileged operations as if they were initiated by a higher-level user or service account. This escalation of privilege undermines the principle of least privilege, which is fundamental to maintaining secure network infrastructure. By leveraging this flaw, an adversary could potentially modify critical configuration settings, disrupt network fabric management services, or install persistent backdoors within the orchestration layer, thereby compromising the integrity and availability of the entire managed environment.
This type of vulnerability aligns with Common Weakness Enumeration identifier CWE-345, which describes issues related to insufficient verification of data authenticity, as well as CWE-269 concerning improper privilege escalation where a user obtains higher-level permissions than intended. Furthermore, in the context of the MITRE ATT&CK framework, this exploitation technique maps to techniques involving API abuse and privilege escalation, specifically reflecting behaviors associated with lateral movement or defense evasion within cloud-native or software-defined networking environments. The lack of integrity checks represents a fundamental failure in input validation protocols that should be enforced at both the application layer and potentially reinforced by gateway-level security controls.
To mitigate this risk, immediate remediation efforts must focus on implementing robust integrity verification mechanisms for all API endpoints exposed to authenticated users but not strictly required for high-privilege operations. This includes enforcing strict schema validation, utilizing digital signatures or HMACs for sensitive requests, and ensuring that privilege checks are performed independently of input content validity. Additionally, organizations should review their access control lists to ensure that even if an attacker bypasses initial authentication layers, the underlying authorization logic strictly enforces role-based permissions based on verified user identity rather than trusting request metadata. Regular security audits and penetration testing focused on API integrity and privilege boundaries are recommended to identify similar gaps in other components of the HPE Networking Fabric Composer suite or related management platforms.