CVE-2026-108867 in JeecgBoot
Summary
by MITRE • 10/11/2026
JeecgBoot through 3.9.5 contains a missing authorization vulnerability in the SystemApiController getUserRoleSetById handler that allows any authenticated user to read other users' role assignments. Low-privileged attackers can supply an arbitrary userId parameter to retrieve assigned role codes and identify administrator accounts without the system:user:queryUserRole permission.
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Analysis
by VulDB Data Team • 10/11/2026
The identified security flaw resides within the JeecgBoot framework, specifically affecting versions up through 3.9.5, in the SystemApiController component responsible for managing user roles. The vulnerability is classified as a missing authorization issue, technically categorized under CWE-284 Improper Access Control. This defect manifests in the getUserRoleSetById handler method, which is designed to retrieve role assignments associated with specific users within the application's identity management system. Under normal operational parameters, this endpoint should enforce strict access controls ensuring that only authorized administrators or privileged service accounts can query user-role mappings for any given identifier. However, due to insufficient validation of the calling context against the requested resource owner, the handler fails to verify whether the authenticated session initiating the request possesses the necessary privileges to view data belonging to other entities.
This architectural oversight allows any authenticated user, regardless of their assigned privilege level or role within the application, to exploit this endpoint by supplying an arbitrary userId parameter in the HTTP request payload. By iterating through potential user identifiers or targeting known administrative accounts, a low-privileged attacker can successfully retrieve detailed information regarding which roles are assigned to those users. This capability effectively bypasses the system:user:queryUserRole permission check that is intended to restrict such queries to authorized personnel only. The consequence of this exposure is significant, as it enables attackers to map out the internal role hierarchy and identify high-value targets, specifically administrator accounts or other privileged service identities, without triggering standard access control denials.
The operational impact of this vulnerability extends beyond simple information disclosure. By accurately identifying which users hold administrative roles, an attacker can prioritize their efforts for subsequent exploitation phases. This intelligence gathering facilitates targeted attacks such as credential stuffing against known administrators, social engineering campaigns aimed at high-privilege accounts, or the identification of potential lateral movement paths within the network if other vulnerabilities are present in those privileged contexts. Furthermore, this exposure violates fundamental principles of data confidentiality and integrity by allowing unauthorized entities to access sensitive identity management metadata that should remain strictly confined to system administration functions.
From a threat modeling perspective aligned with the MITRE ATT&CK framework, this vulnerability supports reconnaissance activities categorized under T1087 Account Discovery, as it allows an attacker to enumerate accounts based on their roles and privileges. It also relates to T1530 Data from Cloud Storage if the role assignments are considered sensitive organizational data stored within the application's backend systems. The lack of proper object-level authorization represents a critical gap in the defense-in-depth strategy employed by the framework, highlighting the necessity for rigorous input validation and context-aware access control checks on all API endpoints that handle user-specific resources.
To mitigate this vulnerability, immediate remediation is required by upgrading JeecgBoot to version 3.9.6 or later where this issue has been addressed. In environments where an upgrade is not immediately feasible, a compensating control involves implementing explicit authorization logic within the getUserRoleSetById handler to verify that the authenticated user's ID matches the requested userId parameter for non-administrative roles, or enforcing strict role-based access control checks requiring specific administrative privileges before returning any role assignment data. Additionally, organizations should review their API gateway configurations and WAF rules to detect anomalous patterns of sequential userId enumeration attempts targeting this endpoint. Regular security audits focusing on object-level authorization flaws across all RESTful endpoints are recommended to prevent similar misconfigurations in other parts of the application logic.