Description

A vulnerability in the API of HPE Networking Fabric Composer could allow an unauthenticated remote attacker to obtain limited system information and to change the state of certain settings of a vulnerable system. Successful exploitation could allow an attacker to gain insight into internal services and workflows and to make unauthorized changes that may disrupt the normal operation of the affected service.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.6",
  "pubDate": "2026-09-01T20:17:17.977Z",
  "pubdate": "2026-09-01T20:17:17.977Z",
  "executiveSummary": "HPE Networking Fabric Composer contains a vulnerability within its API layer that permits unauthenticated remote attackers to interact with system services.\nThe vulnerability allows an attacker to exfiltrate limited system information and modify specific configuration states, resulting in a potential disruption of service operations.\nThis flaw represents a significant security risk, as it bypasses standard authentication mechanisms to permit unauthorized administrative or informational access to internal service workflows.\nThe primary impact involves the compromise of system confidentiality and integrity, as attackers can gain insight into network infrastructure and disrupt legitimate business operations through unauthorized state changes.\nNo specific version numbers are provided in the source description, but the scope encompasses the HPE Networking Fabric Composer product. Exploitation does not require prior authentication, making this an externally exploitable threat vector that requires immediate attention to restore the expected security posture of the fabric management environment.",
  "technicalDetails": "The vulnerability resides in the API implementation of HPE Networking Fabric Composer, which fails to correctly enforce authentication and authorization controls for specific endpoints. By sending crafted requests to these unprotected API endpoints, an unauthenticated attacker can query the system to retrieve sensitive internal configuration metadata and system information.\nThe attack flow initiates when an attacker issues unauthenticated HTTP or HTTPS requests directly to the targeted API component. Because the underlying service fails to perform a validation check for session tokens or credentials, the API responds to these requests as if they originated from an authorized internal process or authenticated administrative user.\nBeyond reconnaissance, the vulnerability allows for state-changing operations. An attacker can transmit structured payloads to modify the configuration of the affected system. This unauthorized state manipulation can alter service behaviors, potentially causing a denial of service, redirecting workflows, or disabling security-critical configurations. The lack of validation on these state-changing endpoints allows an attacker to influence the operation of the networking fabric management layer without possessing valid credentials.\nThe root cause is identified as an improper access control implementation within the product's API framework, specifically failing to maintain an 'authenticated-only' requirement for sensitive management operations. Because the API surface is exposed, the network accessibility of the composer allows remote exploitation. The payload behavior involves standard RESTful interactions where the attacker manipulates parameters to read system state or trigger write operations to the configuration database.\nPost-exploitation, the attacker gains internal visibility into the network architecture, which can be leveraged for further lateral movement or to facilitate a persistent disruption of fabric orchestration. The ability to modify service settings provides a mechanism for an attacker to maintain a persistent impact or create an environment conducive to further malicious activities within the fabric managed by HPE Networking Fabric Composer."
}