CVE-2026-108621 in JeecgBoot
Summary
by MITRE • 10/11/2026
JeecgBoot through 3.9.5 contains a missing authorization vulnerability in the SysPositionController edit handler that allows any authenticated user to modify organizational positions. Low-privileged attackers can obtain position ids from the unguarded list endpoint and send PUT or POST requests to /sys/position/edit to alter position names, codes, and ranks.
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Analysis
by VulDB Data Team • 10/11/2026
The identified vulnerability resides within the JeecgBoot framework version 3.9.5, specifically affecting the SysPositionController component responsible for managing organizational positions. This flaw represents a critical failure in access control mechanisms, classified under CWE-862 as Missing Authorization. The core technical issue stems from an insufficient verification of user privileges before executing state-changing operations on sensitive business data. While the application correctly restricts certain administrative functions to high-level administrators, it fails to enforce equivalent restrictions on the edit handler for organizational positions. This oversight allows any authenticated user, regardless of their assigned role or permission level within the system, to interact with endpoints designed exclusively for privileged management tasks.
The exploitation path begins with an attacker who has already obtained valid authentication credentials through standard login procedures. Once authenticated, the adversary can query unguarded list endpoints that expose internal identifiers such as position IDs without requiring elevated permissions. These identifiers are essential for targeting specific records within the database. With this information in hand, the attacker constructs HTTP PUT or POST requests directed at the /sys/position/edit endpoint. Because the server-side logic does not validate whether the requesting user possesses the necessary authority to modify organizational structures, these malicious requests are processed successfully. The attacker can thereby alter critical attributes of positions, including their names, codes, and hierarchical ranks.
The operational impact of this vulnerability is significant for organizations relying on JeecgBoot for enterprise resource planning or human resources management. By modifying position data, an attacker can disrupt organizational workflows, create confusion in reporting structures, or potentially escalate privileges if the system relies on positional hierarchy for access decisions. For instance, altering a rank might allow lower-level users to bypass certain restrictions that are tied to specific job titles. Furthermore, this manipulation undermines the integrity of audit trails and compliance reports that depend on accurate organizational data. The ability to change position codes could also interfere with integration points where external systems reference these identifiers for synchronization purposes.
From a threat modeling perspective aligned with MITRE ATT&CK techniques, this vulnerability facilitates unauthorized access to sensitive information and subsequent modification of system configurations. It aligns with T1078 Valid Accounts, as the attacker leverages legitimate credentials, and T1530 Data from Information Repositories for gathering position IDs via unguarded endpoints. The actual exploitation phase corresponds to T1222 File and Directory Permissions Modification or more broadly T1496 Endpoint Denial of Service if the changes cause systemic instability. This scenario highlights a common pattern in web applications where business logic layers fail to implement fine-grained access control checks, relying instead on coarse-grained role-based controls that do not cover all endpoints adequately.
To mitigate this vulnerability, developers must immediately apply patches provided by JeecgBoot for versions 3.9.5 and earlier if available, or upgrade to a version where the SysPositionController has been secured with proper authorization checks. Implementing robust access control policies is essential; specifically, every endpoint that modifies data should verify not only authentication but also explicit permission grants associated with the specific resource being accessed. Input validation alone is insufficient for this class of vulnerability because the input itself may be syntactically correct and safe from injection attacks while still representing an unauthorized action. Security headers and API gateways can provide additional layers of defense by enforcing policy-based restrictions on request routing before they reach application logic. Regular security audits focusing on authorization bypasses are recommended to identify similar gaps in other controllers within the framework.