CVE-2026-2107: Yeqifu Warehouse Auth Bypass Vulnerability

CVE-2026-2107 Overview

CVE-2026-2107 is an improper authorization vulnerability discovered in the Yeqifu Warehouse application. This security flaw affects the loadAllLoginfo, deleteLoginfo, and batchDeleteLoginfo functions within the LoginfoController.java file, which is part of the Log Info Handler component. The vulnerability allows remote attackers to manipulate log information operations without proper authorization checks.

The exploit has been made public, and the affected codebase is identified by commit hash aaf29962ba407d22d991781de28796ee7b4670e4. Notably, the project does not use semantic versioning, making it difficult to identify specific affected and unaffected releases. The project maintainers were notified through a GitHub issue but have not yet responded.

Critical Impact

Remote attackers can bypass authorization controls to access, delete, or batch delete log information, potentially covering their tracks or compromising audit trails in the warehouse management system.

Affected Products

• Yeqifu Warehouse (all versions up to commit aaf29962ba407d22d991781de28796ee7b4670e4)

Discovery Timeline

• February 7, 2026 - CVE-2026-2107 published to NVD
• February 10, 2026 - Last updated in NVD database

Technical Details for CVE-2026-2107

Vulnerability Analysis

The vulnerability resides in the Log Info Handler component of the Yeqifu Warehouse application, specifically affecting three critical functions: loadAllLoginfo, deleteLoginfo, and batchDeleteLoginfo. These functions handle log management operations but fail to implement proper authorization controls before executing sensitive operations.

This improper authorization flaw (CWE-266: Incorrect Privilege Assignment) enables authenticated users with low privileges to perform operations that should be restricted to administrators. The network-accessible nature of this vulnerability allows remote exploitation with minimal prerequisites.

Root Cause

The root cause of this vulnerability is insufficient authorization validation in the LoginfoController.java controller class. The affected functions do not verify whether the requesting user has the appropriate privileges to perform log viewing, deletion, or batch deletion operations. This allows any authenticated user to manipulate system logs regardless of their actual role or permission level.

Attack Vector

The attack can be launched remotely over the network by any authenticated user with low-level privileges. An attacker would need valid credentials to authenticate to the warehouse system, after which they could directly invoke the vulnerable endpoints to:

1. Load and view all log information using loadAllLoginfo
2. Delete specific log entries using deleteLoginfo
3. Perform bulk log deletion using batchDeleteLoginfo

This could enable attackers to view sensitive operational data or erase evidence of malicious activities from system logs, severely compromising the organization's ability to detect and investigate security incidents.

Detection Methods for CVE-2026-2107

Indicators of Compromise

• Unexpected access to log management endpoints by non-administrator users
• Unusual patterns of log deletion activity, particularly bulk deletions
• Access to /sys/controller/LoginfoController endpoints from unauthorized user sessions
• Sudden gaps or missing entries in audit logs

Detection Strategies

• Implement logging at the web application firewall (WAF) level to capture all requests to log management endpoints
• Monitor authentication logs for users accessing log controller functions who lack administrative privileges
• Deploy application-level monitoring to track invocations of loadAllLoginfo, deleteLoginfo, and batchDeleteLoginfo functions
• Correlate user role assignments with endpoint access patterns to identify privilege abuse

Monitoring Recommendations

• Enable detailed access logging for all administrative functions in the warehouse application
• Set up alerts for any log deletion operations, particularly batch deletions
• Implement real-time monitoring of the LoginfoController.java endpoints
• Establish baseline metrics for normal log access patterns to detect anomalies

How to Mitigate CVE-2026-2107

Immediate Actions Required

• Review and restrict network access to the Yeqifu Warehouse application to trusted IP ranges only
• Implement additional authentication and authorization layers at the reverse proxy or WAF level
• Audit user accounts and revoke unnecessary access privileges
• Enable additional logging mechanisms external to the application to preserve audit trails

Patch Information

As of the last update on February 10, 2026, no official patch has been released by the vendor. The project maintainers were notified through GitHub Issue #59 but have not yet responded. Organizations using this software should monitor the Yeqifu Warehouse GitHub Repository for updates and consider implementing workarounds until a fix is available.

Additional technical details about this vulnerability can be found at VulDB #344683.

Workarounds

• Implement authorization checks at the application server or reverse proxy level to restrict access to log management endpoints
• Deploy a Web Application Firewall (WAF) rule to block unauthorized requests to the LoginfoController endpoints
• Modify the application code directly to add proper role-based access control checks to the affected functions
• Consider implementing an external, immutable logging solution that cannot be manipulated through the application

# Example: Restrict access to LoginfoController endpoints via reverse proxy (nginx)
# Add to your nginx configuration for the warehouse application

location ~ /sys/controller/Loginfo {
    # Only allow requests from administrator IP ranges
    allow 10.0.0.0/8;
    deny all;
    
    # Require additional authentication header
    if ($http_x_admin_token != "your-secure-token") {
        return 403;
    }
    
    proxy_pass http://warehouse-backend;
}