CVE-2026-59229 in IoTDB
Summary
by MITRE • 10/21/2026
The Legacy Pipe receiver protocol (handshake / sendPipeData) uses a hardcoded SUPER_USER (root) identity when executing data loading and deletion operations. A user with only SYSTEM-level privileges (such as USE_PIPE or MAINTAIN) who does NOT have WRITE_DATA or DELETE_DATA permissions on target databases can send specially crafted PipeData messages through the Legacy Pipe API, resulting in data loading/deletion operations executed as root — effectively bypassing IoTDB's permission model entirely.
This issue affects Apache IoTDB: from 2.0.0 before 2.0.11.
Users are recommended to upgrade to version 2.0.11, which fixes the issue.
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Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the Legacy Pipe receiver protocol of Apache IoTDB, specifically affecting versions ranging from 2.0.0 up to but not including 2.0.11. This security flaw is rooted in a critical misconfiguration where the system utilizes a hardcoded SUPER_USER identity, equivalent to root privileges, when executing data loading and deletion operations via the sendPipeData interface. The core technical failure lies in the authentication and authorization logic of the Legacy Pipe handshake mechanism, which fails to validate whether the initiating user possesses the necessary WRITE_DATA or DELETE_DATA permissions for the target databases. Instead of enforcing role-based access control based on the authenticated session's privileges, the system blindly elevates all operations performed through this specific protocol endpoint to the highest level of administrative authority. This design oversight effectively neutralizes the intended permission model, allowing any entity with SYSTEM-level privileges, such as those holding USE_PIPE or MAINTAIN roles, to execute privileged actions that should be strictly prohibited for their clearance level.
From a technical perspective, an attacker possessing only basic system access can exploit this flaw by crafting specially formatted PipeData messages and transmitting them through the Legacy Pipe API. Because the backend processes these requests under the root identity, the database engine executes data ingestion or deletion commands without checking if the original requester has explicit write or delete rights on the specific tables involved. This constitutes a classic case of improper privilege assignment where the system assumes trust based on protocol entry rather than user-specific permissions. The vulnerability allows for unauthorized modification or destruction of critical data assets, as well as potential denial of service through mass deletion operations. Since the Legacy Pipe receiver is often used in distributed IoT scenarios for high-throughput data ingestion, this flaw poses a significant risk to environments where multiple tenants or services share the same IoTDB instance with varying levels of access control expectations.
The operational impact of this vulnerability is severe, as it leads to a complete bypass of Apache IoTDB's security boundaries. An attacker can compromise data integrity by injecting malicious payloads into time-series databases under the guise of legitimate administrative operations. Furthermore, they can cause significant availability issues by deleting large volumes of historical sensor data or configuration settings that are essential for system operation. This lack of granular access control undermines trust in multi-tenant deployments where isolation between different user groups is a fundamental requirement. The ability to escalate privileges from SYSTEM-level to SUPER_USER status without additional authentication steps represents a critical failure in the principle of least privilege, exposing the organization to both data breaches and operational disruptions that could impact downstream analytics or real-time monitoring systems dependent on accurate IoTDB state.
To mitigate this risk, organizations running affected versions must immediately upgrade Apache IoTDB to version 2.0.11 or later, where the hardcoded identity issue has been resolved in favor of proper permission checks aligned with the user's actual role. In environments where upgrading is not immediately feasible, administrators should consider disabling access to the Legacy Pipe receiver protocol if it is not strictly required for current operations, thereby removing the attack vector entirely. Additionally, reviewing and tightening network segmentation policies can help limit exposure by ensuring that only trusted internal services can reach the IoTDB endpoints using this legacy interface. It is also advisable to audit existing user roles to ensure that SYSTEM-level privileges are granted sparingly and only to highly trusted service accounts, reducing the blast radius should similar vulnerabilities be discovered in other components of the stack.
This vulnerability aligns with CWE-269, which describes Improper Privilege Management, as it involves a failure to enforce appropriate access control levels for different user roles. It also maps to MITRE ATT&CK technique T1078, specifically Valid Accounts and Default Accounts, because the exploit leverages valid but insufficiently privileged credentials to achieve unauthorized administrative actions through a misconfigured system behavior rather than credential theft or brute force. The reliance on legacy protocols like Legacy Pipe often introduces such security gaps due to older design patterns that predate modern zero-trust architectures. Ensuring that all data manipulation operations are subject to rigorous permission validation regardless of the transport protocol used is essential for maintaining robust cybersecurity posture in IoT infrastructure deployments.