CVE-2026-73721 in Fabric Composer
Summary
by MITRE • 09/01/2026
Vulnerabilities in the API of HPE Networking Fabric Composer could allow an authenticated remote attacker to conduct SQL injection attacks against the HPE Networking Fabric Composer instance. An attacker could exploit these vulnerabilities to obtain and modify sensitive information in the underlying database potentially leading to complete compromise of the HPE Networking Fabric Composer host.
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Analysis
by VulDB Data Team • 09/01/2026
The identified vulnerability resides within the application programming interface (API) component of Hewlett Packard Enterprise Networking Fabric Composer, a centralized management platform used for orchestrating data center networking infrastructure. This flaw represents a critical security deficiency that permits authenticated remote attackers to execute SQL injection attacks against the underlying database system. Unlike vulnerabilities requiring unauthenticated access, this specific weakness necessitates valid credentials, implying that an attacker must first compromise or obtain legitimate user accounts within the Fabric Composer environment before they can leverage this vulnerability for further exploitation. The presence of authentication requirements does not mitigate the severity of the flaw but rather defines the attack vector as one targeting insider threats or compromised administrative sessions.
The technical nature of this vulnerability involves improper neutralization of special elements used in SQL commands, commonly referred to as CWE-89: Improper Neutralization of Special Elements used in an SQL Command. The API endpoints fail to adequately sanitize user-supplied input before incorporating it into dynamically constructed SQL queries. This lack of proper validation allows malicious actors to inject arbitrary SQL statements that are then executed by the database engine. By manipulating these inputs, attackers can bypass intended logic controls and interact directly with the backend data storage layer. This interaction is not limited to simple data retrieval; the vulnerability also permits modification operations, allowing for the alteration or deletion of critical configuration records stored within the Fabric Composer database.
The operational impact of this SQL injection flaw extends far beyond the immediate loss or corruption of data. Because HPE Networking Fabric Composer serves as a central control plane for managing network devices such as switches and routers, compromising its integrity can lead to widespread disruption across the entire enterprise network infrastructure. An attacker who successfully exploits this vulnerability can extract sensitive information including credentials, topology maps, security policies, and configuration details that are stored in the database. Furthermore, by modifying these records, an adversary could reconfigure network paths, disable security controls, or inject malicious configurations into managed devices. This capability effectively grants the attacker a high degree of control over the physical and logical network layout, facilitating lateral movement within the environment.
In terms of threat modeling, this vulnerability aligns with MITRE ATT&CK techniques related to Data Injection (T1190) for initial exploitation and potentially Impair Defenses or Modify System Process (T1562/T1074) if used to alter security configurations. The ability to modify sensitive information in the underlying database directly supports post-exploitation objectives such as persistence, privilege escalation, and data exfiltration. Given that Fabric Composer often holds administrative privileges over network devices, a successful exploit could allow an attacker to pivot from the management plane into the data plane, potentially leading to complete compromise of not just the application host but also the connected network infrastructure it manages.
To mitigate this risk, immediate action is required to apply vendor-provided patches that address the input validation flaws within the API endpoints. Organizations should ensure that all instances of HPE Networking Fabric Composer are updated to the latest secure version as recommended by Hewlett Packard Enterprise. In addition to patching, implementing strict access controls and multi-factor authentication for administrative accounts can reduce the likelihood of credential compromise leading to this exploitation vector. Network segmentation strategies should also be reviewed to limit lateral movement from any compromised management systems to critical production networks. Continuous monitoring of API logs for anomalous SQL query patterns or unusual database activity can aid in early detection of attempted exploits, providing an additional layer of defense-in-depth against such sophisticated attacks.