CVE-2026-111684 in Magistrala
Summary
by MITRE • 10/16/2026
Magistrala through 1.0.0 contains an authorization bypass vulnerability that allows authenticated workspace members to view, issue, and revoke other tenants' device certificates by supplying foreign serials or entity ids. Attackers can call RevokeBySerial, RevokeAll, ViewCert, ListCerts, or IssueCert under their own workspace path to disconnect other tenants' devices, disclose certificates, and mint CA-signed certificates for their device ids.
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Analysis
by VulDB Data Team • 10/16/2026
The vulnerability identified in Magistrala versions through 1.0.0 represents a critical failure in access control mechanisms within the certificate management system. This flaw is classified as an authorization bypass, specifically falling under CWE-285: Improper Authorization. The core technical issue stems from insufficient validation of resource ownership during API operations. While the application correctly authenticates users and verifies that they belong to a specific workspace, it fails to enforce strict isolation between different tenants or organizational units within that shared infrastructure. Consequently, an authenticated user operating under their own valid workspace path can manipulate system resources belonging to other distinct entities by supplying foreign serial numbers or entity identifiers as input parameters. This lack of cross-tenant boundary enforcement allows the application logic to process requests targeting assets outside the requester's authorized scope without triggering appropriate denial responses.
The operational impact of this vulnerability is severe, affecting the integrity and availability of device communications managed by the platform. An attacker with legitimate access credentials for any workspace member account can exploit this flaw to perform several malicious actions using standard API endpoints such as RevokeBySerial, RevokeAll, ViewCert, ListCerts, or IssueCert. By providing serial numbers associated with devices belonging to other tenants, an adversary can remotely disconnect those devices from the network by revoking their certificates. This effectively results in a denial of service for the affected tenant's IoT infrastructure, disrupting critical operations that rely on continuous connectivity. Furthermore, the ability to view and list certificates enables the disclosure of sensitive cryptographic material, potentially exposing private keys or certificate details that should remain confidential within the respective tenant boundaries.
Beyond disruption and data leakage, the vulnerability allows for more sophisticated attacks involving identity impersonation. The attacker can utilize the IssueCert endpoint to mint new Certificate Authority-signed certificates bound to device identifiers controlled by the adversary but associated with other tenants' entities. This capability enables the creation of fraudulent identities that are trusted by the system due to valid CA signatures. Once these forged credentials are issued, an attacker can authenticate as a legitimate device belonging to another tenant, gaining unauthorized access to sensitive data or control over critical infrastructure components managed by the victim organization. This scenario aligns with ATT&CK technique T1078: Valid Accounts, where attackers leverage existing but misconfigured permissions to move laterally and escalate privileges within the environment without needing to exploit a separate authentication flaw.
Mitigation strategies must focus on implementing robust multi-tenant isolation at both the application logic and database query levels. Developers should ensure that every API request involving resource manipulation includes explicit checks verifying that the target resource, identified by serial number or entity ID, is strictly owned by the authenticated user's workspace or tenant context. This requires updating backend services to perform ownership validation before executing any certificate operations such as issuance, revocation, or viewing. Additionally, implementing strict input validation and sanitization for all identifiers passed into these endpoints can help prevent injection-based attempts to bypass logical checks. For organizations currently running versions prior to 1.0.1, immediate patching is recommended if an update has been released that addresses this authorization logic error. In the interim, network-level segmentation or API gateway policies restricting access to certificate management endpoints based on tenant context may provide a temporary layer of defense against exploitation until the underlying code flaw is resolved.