CVE-2026-106705 in eladmin
Summary
by MITRE • 10/16/2026
ELADMIN (eladmin-mp) up to 2.7 contains an improper access control vulnerability in the role management module. The endpoint PUT /api/roles/menu (RoleController.updateRoleMenu) authorizes the request only by comparing the target role's level with the caller's minimum level. The application neither validates the granted menu set nor prevents a caller from modifying its own role. A logged-in non-admin user whose role holds the delegated `roles:edit` permission can submit its own role id together with an arbitrary list of menu ids.
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Analysis
by VulDB Data Team • 10/16/2026
The vulnerability identified in ELADMIN versions up to 2.7 represents a critical failure in server-side access control mechanisms, specifically within the role management module. This flaw allows unauthorized modification of user roles and permissions by exploiting insufficient validation logic during API requests. The core issue resides in the endpoint PUT /api/roles/menu, which is handled by the RoleController.updateRoleMenu method. In secure systems, such endpoints must enforce strict authorization checks that verify not only whether a user has permission to edit roles but also ensure they are editing a role assigned to them or one for which they have explicit administrative authority over other users. Instead, ELADMIN relies solely on comparing the target role's level against the caller's minimum required level. This simplistic check fails to account for lateral movement scenarios where a non-administrator user with delegated permissions can manipulate their own privileges by targeting their own role identifier.
From a technical perspective, the vulnerability stems from two distinct failures in authorization logic. First, the application does not validate whether the menu set being assigned is within the bounds of what the caller is actually permitted to grant or modify. Second, and more critically, there is no check preventing a user from submitting their own role ID as the target for modification. In standard RBAC implementations, users should only be able to edit roles that are distinct from their own unless they possess super-administrator privileges. By allowing a non-admin user with the delegated roles:edit permission to submit an arbitrary list of menu IDs associated with their own role ID, the system effectively permits privilege escalation. The attacker can inject additional menus or permissions into their current role definition, thereby elevating their access level without needing higher-level administrative credentials.
The operational impact of this vulnerability is severe, as it directly compromises the integrity and confidentiality of the application's security model. An authenticated non-administrator user with specific delegated editing rights can escalate their privileges to gain unauthorized access to restricted areas or functions within the ELADMIN platform. This could lead to data exfiltration, modification of critical system configurations, or further exploitation of other vulnerabilities that require higher privilege levels. Since the vulnerability allows for self-privilege escalation, it undermines the fundamental principle of least privilege and renders any role-based restrictions ineffective against insiders with basic editing permissions.
This flaw aligns closely with CWE-269, Improper Privilege Assignment, as the system fails to ensure that users only operate within their assigned security clearance levels during state-changing operations. Additionally, from a tactical perspective, this vulnerability facilitates ATT&CK technique T1078, Valid Accounts, by allowing an attacker to maintain persistent access through elevated privileges obtained via legitimate but misconfigured credentials. It also relates to CWE-639, Authorization Bypass Through User-Controlled Key, because the role ID provided in the request is used as a key for authorization decisions without sufficient validation of ownership or hierarchy constraints.
To mitigate this vulnerability, immediate updates to ELADMIN are recommended if patches have been released by the vendor. In the absence of an official patch, administrators should implement strict server-side checks that verify the relationship between the authenticated user and the target role ID. Specifically, the application must ensure that a user can only modify roles assigned to other users or distinct entities unless they hold explicit super-administrator status. Furthermore, input validation should be enforced to restrict menu IDs to those explicitly permitted by the caller's current permissions scope. Implementing comprehensive audit logging for all role modification events will also aid in detecting and investigating any attempts at privilege escalation using this vector.