Description

A command sanitization bypass exists in the API of HPE Networking Fabric Composer. Successful exploitation could allow an authenticated low privilege operator user to escalate their permissions to those of an administrative user, leading to complete compromise of the affected system.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.8",
  "pubDate": "2026-09-01T20:17:17.763Z",
  "pubdate": "2026-09-01T20:17:17.763Z",
  "executiveSummary": "A command sanitization bypass vulnerability has been identified within the API component of HPE Networking Fabric Composer.\nThe vulnerability allows an authenticated user with low-privileged operator access to bypass input validation controls, facilitating unauthorized command execution.\nThis flaw leads to a critical escalation of privileges, enabling a low-privileged actor to assume administrative control over the affected system.\nThe primary risk implication is a total system compromise, where an attacker can gain full administrative rights to manipulate network configurations, exfiltrate sensitive data, or disrupt fabric operations.\nExploitation requires the attacker to hold valid, low-privileged operator credentials within the system.\nSuccessful exploitation compromises the integrity, confidentiality, and availability of the networking management infrastructure, necessitating immediate remediation to prevent unauthorized privilege escalation.",
  "technicalDetails": "The root cause of this vulnerability lies in insufficient input sanitization within the API interface of HPE Networking Fabric Composer. The system fails to properly validate or neutralize special characters and shell-metacharacters passed through user-supplied API requests.\nThe vulnerability originates in the processing logic that handles incoming command calls. When an authenticated operator submits an API request, the backend processes the input without applying robust filtering or parameterized execution techniques. This allows for command injection, where an attacker can append unauthorized shell commands to legitimate API calls.\nThe attack flow proceeds as follows: 1. An authenticated low-privileged user constructs a specially crafted API request containing malicious payloads designed to interact with the underlying operating system or management service. 2. The API component fails to sanitize the input, passing the concatenated commands to the system shell or underlying interpreter. 3. The execution context maintains the identity of the service, but the injected commands operate with the scope of the administrative environment, allowing the attacker to alter user roles, assign administrative flags to their own account, or execute arbitrary system binaries.\nThe vulnerable component is the API handler responsible for processing administrative commands and operator actions. By manipulating these parameters, the attacker can break out of the intended application logic, achieving remote code execution or, more specifically in this context, privilege escalation. Because the system trusts the input from the API layer without adequate validation, the integrity of the authorization boundary is invalidated.\nPost-exploitation, the attacker gains the ability to execute operations reserved for administrative users. This includes, but is not limited to, modifying network topology settings, viewing global system configurations, managing other user accounts, and potentially accessing underlying system files. The impact is significant as it transforms a restricted user account into an administrative session, bypassing all intended access control policies. The vulnerability is exploitable remotely over the network, provided the attacker has already obtained valid low-privileged credentials for the Fabric Composer instance."
}