CVE-2026-111683 in Ralph
Summary
by MITRE • 10/16/2026
Allegro Ralph through 20260902.1 contains a missing authorization vulnerability that allows authenticated staff users to bypass rack model permissions because RalphPermission skips checks for views without a queryset. Attackers can call DCAssetsView and SRRacksAPIView at /api/rack/<id> and /api/server_room/<id> to read asset hostnames, serials and management IPs, and to modify, move or create racks.
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Analysis
by VulDB Data Team • 10/16/2026
The vulnerability identified in Allegro Ralph versions up through 20260902.1 represents a critical failure in access control mechanisms within the application's backend API layer. This flaw is classified as a missing authorization issue, specifically falling under CWE-862: Missing Authorization. The root cause lies in the implementation of the RalphPermission class, which serves as the primary gatekeeper for resource accessibility. In standard Django REST Framework applications, permission classes typically validate user rights against specific model instances or querysets to ensure that an authenticated user has explicit permission to access a given object. However, this particular implementation contains a logical gap where views that do not utilize a queryset are exempted from these rigorous checks. This oversight creates a significant security blind spot, allowing any authenticated staff user to bypass intended restrictions on rack model permissions and interact with sensitive infrastructure data without proper authorization validation.
The operational impact of this vulnerability is severe due to the nature of the affected endpoints: DCAssetsView and SRRacksAPIView located at /api/rack/<id> and /api/server_room/<id>. These API routes are designed to manage physical IT assets, including servers and network racks within data centers. Because the authorization check is skipped for these views, an attacker with valid staff credentials can perform unauthorized read operations to extract sensitive information such as asset hostnames, serial numbers, and management IP addresses. This exposure facilitates reconnaissance activities that could aid in further attacks against the infrastructure. Furthermore, the vulnerability extends beyond mere data exfiltration; it permits write operations including modifying existing rack configurations, moving assets between racks or server rooms, and creating new rack entries. Such capabilities allow an attacker to disrupt physical asset tracking, potentially leading to operational chaos, misallocation of resources, or even physical security risks if management IPs are used for unauthorized remote access attempts against network devices.
From a threat modeling perspective, this vulnerability aligns with MITRE ATT&CK technique T1078: Valid Accounts, as it relies on legitimate credentials that have been compromised or abused due to insufficient privilege separation. The ability to modify and move assets also touches upon T1496: Resource Hijacking if the attacker uses the infrastructure for malicious purposes, although the primary concern here is integrity violation and information disclosure. The lack of proper object-level permissions means that the principle of least privilege is effectively nullified for these specific endpoints, granting staff users far more control over physical asset management than intended by the system administrators who configured their roles.
To mitigate this vulnerability, immediate patching to a version later than 20260902.1 is required if available from the vendor. In the interim, organizations should implement strict network-level access controls such as firewall rules or API gateway policies that restrict access to these specific API endpoints only to trusted internal subnets and authorized service accounts where possible. Additionally, application-layer mitigations include reviewing custom permission classes in Django REST Framework applications to ensure they explicitly handle views without querysets by enforcing checks against the requesting user's role and permissions regardless of queryset presence. It is also advisable to audit existing staff user roles to ensure that only essential personnel have access to these API endpoints and to enable comprehensive logging for all rack modification events to detect any unauthorized changes promptly. Regular security code reviews focusing on authorization logic in view classes are recommended to prevent similar oversights in future development cycles.