CVE-2026-17191 in VeloCloud Orchestrator On-Prem
Summary
by MITRE • 07/27/2026
An input validation vulnerability exists in an API component of the orchestrator. An authenticated user can exploit this flaw to manipulate backend queries, which may result in unauthorized access to data beyond their intended privileges and cause the underlying system to initiate unintended outbound network connections.
This issue was discovered internally by Arista and the company is not aware of any malicious uses of this issue in customer networks.
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Analysis
by VulDB Data Team • 07/27/2026
This vulnerability represents a critical input validation flaw within the orchestrator's API component that enables authenticated users to manipulate backend database queries through crafted inputs. The weakness stems from insufficient sanitization of user-supplied data before it is processed by the underlying database layer, creating an avenue for query manipulation attacks. Such vulnerabilities typically fall under CWE-20, which encompasses input validation issues, and can potentially lead to unauthorized data access and system compromise. The vulnerability's discovery through internal security research indicates that Arista maintains proactive security monitoring practices, though the lack of reported malicious exploitation in customer environments suggests either limited attack surface or effective defensive measures in place.
The technical implementation of this flaw allows authenticated users to inject malicious payloads into API endpoints that process user input directly without proper validation mechanisms. When the orchestrator processes these inputs, it fails to properly sanitize or escape query parameters, enabling attackers to manipulate SQL or NoSQL queries through crafted requests. This creates opportunities for data exfiltration, privilege escalation, and potentially lateral movement within the network infrastructure. The vulnerability's impact extends beyond simple data access issues as it can cause the system to initiate unintended outbound network connections, suggesting potential command and control communication patterns that align with ATT&CK technique T1071.004 for application layer protocols.
The operational implications of this vulnerability are significant for organizations relying on Arista orchestrator components, particularly in environments where privileged access is required for system management. An authenticated attacker could leverage this flaw to access sensitive network configuration data, user credentials, or system information that should be restricted to authorized personnel only. The unintended outbound network connections pose additional risks including potential data leakage to external threat actors and possible beaconing behavior that could indicate compromise. Organizations must consider the broader security implications of such vulnerabilities within their network infrastructure management systems.
Mitigation strategies should prioritize immediate implementation of proper input validation and sanitization mechanisms across all API endpoints within the orchestrator component. Security controls should include parameterized queries, input length restrictions, and comprehensive validation of user-supplied data before processing. Network monitoring should be enhanced to detect unusual outbound connections that may indicate exploitation attempts or lateral movement activities. Additionally, organizations should implement principle of least privilege access controls and conduct regular security assessments of their network orchestration systems. The vulnerability's classification as a high-risk issue aligns with industry best practices for securing network management components, and the lack of reported exploitation in customer environments suggests that proactive remediation efforts may be sufficient to address potential threats before they can be effectively weaponized by adversaries.