CVE-2026-108630 in JeecgBoot
Summary
by MITRE • 10/11/2026
JeecgBoot through 3.9.5 contains a missing authorization vulnerability in SysDepartPermissionController that allows any authenticated user to modify department permission records by calling the edit endpoint. Low-privileged attackers can obtain row ids from the unguarded list endpoint and overwrite depart_id, permission_id and data_rule_ids to alter which menus and data rules departments may delegate.
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Analysis
by VulDB Data Team • 10/11/2026
The vulnerability identified in JeecgBoot versions up to 3.9.5 represents a critical failure in access control mechanisms within the SysDepartPermissionController module. This flaw is classified as an Insecure Direct Object Reference (IDOR) or, more broadly, a Broken Access Control issue under CWE-284 and CWE-639 respectively. The core technical deficiency lies in the absence of proper authorization checks on the edit endpoint responsible for modifying department permission records. While the application correctly restricts access to certain administrative functions, it fails to verify whether the authenticated user initiating the request possesses the necessary privileges to alter specific resource attributes associated with other departments or system-wide configurations. This oversight allows any logged-in user, regardless of their assigned role hierarchy, to interact directly with internal object identifiers and modify sensitive configuration data without triggering appropriate permission validations.
The operational impact of this vulnerability is significant because it enables low-privileged attackers to escalate their influence within the application environment by manipulating departmental permissions. Attackers can first exploit an unguarded list endpoint to enumerate valid row IDs associated with existing department permission records. Once these identifiers are obtained, they can craft malicious requests targeting the edit endpoint, specifically overwriting critical fields such as depart_id, permission_id, and data_rule_ids. By altering these parameters, attackers effectively redefine which menus a specific department can access and what data rules govern their visibility. This manipulation allows unauthorized users to grant themselves or other compromised accounts access to restricted administrative interfaces, sensitive business modules, or proprietary datasets that were previously isolated from their scope of authority.
From an offensive security perspective, this vulnerability aligns with the MITRE ATT&CK technique T1078, Valid Accounts, as it leverages legitimate credentials to perform unauthorized actions, and potentially T1546, Event Triggered Execution, if such permission changes trigger subsequent automated processes that benefit the attacker. The ability to modify data_rule_ids is particularly dangerous because it directly impacts data segregation logic, potentially allowing a user from one department to view or manipulate records belonging to another, thereby violating principles of least privilege and data isolation required by standards like ISO 27001 and SOC 2. This type of vulnerability often arises during rapid development cycles where developers focus on functional completeness while neglecting robust input validation and context-aware authorization checks for every API endpoint exposed to authenticated users.
To mitigate this risk, immediate remediation efforts should focus on implementing strict role-based access control (RBAC) validations at the controller level before any write operations are executed. Developers must ensure that the SysDepartPermissionController verifies not only that the user is authenticated but also that they hold a specific administrative role or possess explicit permission to modify departmental configurations. Additionally, input validation should be enforced to prevent IDOR attacks by ensuring that users can only access objects explicitly assigned to their own organizational unit unless elevated privileges are confirmed through secure session management tokens rather than client-supplied identifiers. Regular security code reviews and the integration of automated static application security testing (SAST) tools capable of detecting missing authorization checks in Java Spring Boot applications will help prevent similar flaws from being introduced into future releases.