CVE-2026-2077: Yeqifu Warehouse Auth Bypass Vulnerability

CVE-2026-2077 Overview

A security vulnerability has been identified in Yeqifu Warehouse, an open-source warehouse management system. The vulnerability affects the Role Management Handler component, specifically the addRole, updateRole, and deleteRole functions within the RoleController.java file. This improper authorization flaw allows attackers to manipulate role management operations without proper access controls, potentially leading to unauthorized privilege modifications.

Critical Impact

Attackers can remotely exploit this improper authorization vulnerability to manipulate role assignments, potentially escalating privileges or disrupting access control mechanisms within affected Yeqifu Warehouse installations.

Affected Products

• Yeqifu Warehouse (up to commit aaf29962ba407d22d991781de28796ee7b4670e4)
• Yeqifu Warehouse (unversioned releases - all versions potentially affected)

Discovery Timeline

• 2026-02-07 - CVE-2026-2077 published to NVD
• 2026-02-10 - Last updated in NVD database

Technical Details for CVE-2026-2077

Vulnerability Analysis

This vulnerability stems from improper authorization controls (CWE-266: Incorrect Privilege Assignment) in the Role Management Handler of Yeqifu Warehouse. The affected functions—addRole, updateRole, and deleteRole—located in dataset\repos\warehouse\src\main\java\com\yeqifu\sys\controller\RoleController.java fail to properly validate user permissions before executing role management operations.

The flaw allows authenticated users with low privileges to perform administrative role management actions that should be restricted to higher-privileged accounts. This broken access control pattern is particularly dangerous in warehouse management systems where role-based access control is critical for maintaining operational security and data integrity.

Root Cause

The root cause of this vulnerability is the absence of proper authorization checks in the Role Management Handler. The RoleController.java component does not adequately verify whether the requesting user has sufficient privileges to perform role creation, modification, or deletion operations. This allows users with minimal authentication to bypass intended access restrictions and manipulate the role hierarchy within the application.

Attack Vector

The vulnerability can be exploited remotely over the network by authenticated users. An attacker with low-level access to the Yeqifu Warehouse application can send crafted HTTP requests to the role management endpoints (addRole, updateRole, or deleteRole) to perform unauthorized operations. The attack requires no user interaction and can be executed with low complexity, making it accessible to attackers with basic technical skills.

The exploitation flow involves:

1. Authenticating to the Yeqifu Warehouse application with a low-privilege account
2. Sending direct requests to the role management API endpoints
3. Creating, modifying, or deleting roles without proper authorization validation
4. Potentially escalating privileges by assigning elevated roles to attacker-controlled accounts

Detection Methods for CVE-2026-2077

Indicators of Compromise

• Unexpected role creation, modification, or deletion events in application logs
• Unauthorized users appearing with elevated permissions in the system
• API access logs showing role management endpoint requests from non-administrative accounts
• Anomalous patterns in RoleController endpoint access from low-privilege user sessions

Detection Strategies

• Monitor HTTP request logs for unauthorized access attempts to /sys/role/addRole, /sys/role/updateRole, and /sys/role/deleteRole endpoints
• Implement alerting for role changes performed by users without administrative privileges
• Review application audit logs for discrepancies between user permission levels and role management activities
• Deploy web application firewall rules to detect and block suspicious role management requests

Monitoring Recommendations

• Enable comprehensive logging for all role management operations in Yeqifu Warehouse
• Implement real-time alerting for any role modifications outside of approved change windows
• Conduct regular audits of user roles and permissions to identify unauthorized privilege escalations
• Monitor database tables related to role assignments for unexpected modifications

How to Mitigate CVE-2026-2077

Immediate Actions Required

• Restrict network access to Yeqifu Warehouse installations to trusted networks only
• Implement additional authentication layers (e.g., multi-factor authentication) for administrative functions
• Review and audit all existing user roles for unauthorized privilege assignments
• Consider deploying a web application firewall to filter malicious role management requests

Patch Information

As of the last update, the Yeqifu Warehouse project has been notified of this vulnerability through GitHub Issue #54 but has not yet responded. No official patch is currently available. Organizations using this software should monitor the project repository for security updates and implement the workarounds below until an official fix is released.

Workarounds

• Implement server-side access control lists to restrict role management endpoints to verified administrator accounts
• Add custom authorization middleware to validate user permissions before processing role management requests
• Temporarily disable role management functionality if not critically needed for operations
• Deploy network segmentation to limit exposure of the vulnerable application

# Example: Restrict access to role management endpoints via web server configuration
# Apache configuration example
<Location "/sys/role/addRole">
    Require group administrators
</Location>
<Location "/sys/role/updateRole">
    Require group administrators
</Location>
<Location "/sys/role/deleteRole">
    Require group administrators
</Location>