Overview

CVE-2026-106705 is an improper access control vulnerability in the ELADMIN (eladmin-mp) role management module up to version 2.7. This vulnerability allows a logged-in non-admin user with specific permissions to modify their role and assign arbitrary menu IDs, potentially leading to unauthorized access and privilege escalation. The vulnerability has a CVSS score of 8.8, indicating high severity.

Understanding the Vulnerability / Threat

Root Cause Analysis

The root cause of this vulnerability is an improper access control issue in the role management module of ELADMIN. Specifically, the endpoint PUT /api/roles/menu (RoleController.updateRoleMenu) authorizes requests based solely on the comparison of the target role's level with the caller's minimum level. The application fails to validate the granted menu set and does not prevent a caller from modifying their own role. This flaw belongs to the CWE-284 category, which involves improper access control.

Attack Surface & Vector

This vulnerability is accessible over the network (AV:N) and requires low privileges (PR:L). The attack complexity is low (AC:L), and no user interaction is needed (UI:N). The scope of the vulnerability is unchanged (S:U), meaning the vulnerability is confined to the initial target but can have a high impact on confidentiality, integrity, and availability.

Exploitation Mechanics — Scenario Walkthrough

Scenario: Exploiting ELADMIN Role Management Vulnerability
  • Initial Position: An attacker is a logged-in non-admin user with a role that holds the delegated `roles:edit` permission.
  • Triggering the Flaw: The attacker crafts a PUT request to the /api/roles/menu endpoint with their own role ID and an arbitrary list of menu IDs. The request is structured in a way that exploits the lack of validation and authorization checks.
  • What Breaks: The application, due to the improper access control, fails to validate the request properly. It only checks if the target role's level is within the caller's minimum level, which is satisfied since the attacker is modifying their own role. As a result, the attacker can successfully submit the request, modifying their role to have an arbitrary set of menu IDs.
  • Attacker's Prize: With this modification, the attacker can gain access to menu items (and associated functionalities) they should not have access to. This could lead to unauthorized data access, modification of system settings, or even lateral movement within the system if additional vulnerabilities exist.

Real-World Impact

The potential impact of this vulnerability is significant. An attacker could exploit it to escalate their privileges, access sensitive data, or disrupt system operations. Given that the vulnerability has a CVSS score of 8.8, it is considered high severity, and exploitation could lead to substantial harm.

Detection & Defense

Immediate Mitigations

To address this vulnerability, it is recommended to upgrade ELADMIN (eladmin-mp) to a version beyond 2.7 as soon as possible. Until a patch is applied, restricting access to the role management module and closely monitoring role modifications and system logs for suspicious activity can help mitigate the risk.

Detection Strategies

Defenders can detect exploitation attempts by monitoring system logs for unusual role modification requests, especially those originating from non-admin users. Implementing additional security controls, such as multi-factor authentication and strict role-based access control, can also help prevent exploitation.

Long-Term Hardening

To prevent similar vulnerabilities in the future, it is essential to implement robust access control mechanisms, including thorough validation and authorization checks for all role management operations. Regular security audits and penetration testing can help identify and address potential vulnerabilities before they can be exploited.

Key Takeaways

  • CVE-2026-106705 is an improper access control vulnerability in ELADMIN (eladmin-mp) up to version 2.7.
  • The vulnerability allows a logged-in non-admin user with `roles:edit` permission to modify their role and assign arbitrary menu IDs.
  • The vulnerability has a CVSS score of 8.8, indicating high severity.
  • Immediate mitigation involves upgrading to a patched version and monitoring for suspicious activity.
  • Long-term hardening includes implementing robust access control and regular security audits.

Sources