CVE-2026-2693: CyreneAdmin Auth Bypass Vulnerability

CVE-2026-2693 Overview

A vulnerability has been identified in CoCoTeaNet CyreneAdmin up to version 1.3.0. This improper authorization vulnerability affects the /api/system/dashboard/getCount endpoint within the System Info component. By manipulating requests to this endpoint, an attacker can bypass authorization controls and gain unauthorized access to system information. The attack can be launched remotely over the network, and the exploit has been publicly disclosed.

Critical Impact

Unauthorized access to system dashboard information through improper authorization controls in the System Info Endpoint, potentially exposing sensitive operational data.

Affected Products

• CoCoTeaNet CyreneAdmin versions up to 1.3.0
• Systems exposing the /api/system/dashboard/getCount endpoint

Discovery Timeline

• 2026-02-19 - CVE-2026-2693 published to NVD
• 2026-02-19 - Last updated in NVD database

Technical Details for CVE-2026-2693

Vulnerability Analysis

This vulnerability is classified as CWE-266 (Incorrect Privilege Assignment), indicating that the application fails to properly validate user privileges before granting access to protected resources. The /api/system/dashboard/getCount endpoint in CyreneAdmin's System Info component does not adequately verify that the requesting user has appropriate authorization to access the dashboard statistics and system count information.

The vulnerability allows authenticated users with low privileges to access information that should be restricted to administrators or higher-privileged users. This represents a horizontal or vertical privilege escalation scenario where authorization boundaries are not properly enforced at the API level.

Root Cause

The root cause stems from missing or inadequate authorization checks in the System Info Endpoint handler. The /api/system/dashboard/getCount endpoint processes requests without verifying that the authenticated user has the necessary permissions to access dashboard statistics. This oversight allows any authenticated user to retrieve system information by directly calling the vulnerable endpoint.

Attack Vector

The attack is network-based and requires low privileges, meaning an attacker needs only basic authentication to the CyreneAdmin system. No user interaction is required for exploitation. An attacker can craft HTTP requests directly to the /api/system/dashboard/getCount endpoint to retrieve system dashboard information without proper authorization.

The exploitation flow involves authenticating with low-privileged credentials, then sending requests to the vulnerable endpoint to access restricted system information. Since the exploit has been publicly disclosed, organizations using affected versions are at heightened risk.

Detection Methods for CVE-2026-2693

Indicators of Compromise

• Unusual access patterns to /api/system/dashboard/getCount from low-privileged user accounts
• Anomalous API requests to system dashboard endpoints from users who typically don't access administrative functions
• Authentication logs showing users accessing system information endpoints outside their normal role permissions

Detection Strategies

• Implement API access logging to track all requests to /api/system/dashboard/getCount and correlate with user privilege levels
• Deploy web application firewall (WAF) rules to monitor and alert on suspicious access patterns to administrative API endpoints
• Configure SIEM alerts for authorization anomalies where low-privileged accounts access admin-level endpoints

Monitoring Recommendations

• Enable verbose logging for all System Info Endpoint interactions within CyreneAdmin
• Monitor for repeated access attempts to dashboard APIs by non-administrative user accounts
• Implement behavioral analysis to detect privilege escalation attempts through API abuse

How to Mitigate CVE-2026-2693

Immediate Actions Required

• Review access control configurations for the /api/system/dashboard/getCount endpoint
• Implement additional authorization checks to verify user privileges before processing requests to system information endpoints
• Audit user access logs to identify any potential exploitation of this vulnerability
• Consider restricting access to the System Info Endpoint to administrative IP ranges or VPN connections as an interim measure

Patch Information

Organizations should monitor CoCoTeaNet for official security updates addressing this vulnerability. Consult the VulDB entry for the latest information on patches and remediation guidance. Until an official patch is available, apply the workarounds outlined below.

Workarounds

• Implement middleware or API gateway authorization checks to enforce proper privilege verification for the /api/system/dashboard/getCount endpoint
• Use network-level access controls to restrict access to administrative API endpoints to trusted IP addresses only
• Deploy a reverse proxy with custom authorization rules to validate user permissions before requests reach the vulnerable endpoint
• Consider temporarily disabling the System Info Endpoint if it is not critical to operations until an official patch is released

# Example: Restrict access to vulnerable endpoint using nginx
location /api/system/dashboard/getCount {
    # Allow only from trusted admin network
    allow 10.0.0.0/8;
    deny all;
    
    # Require additional authentication header
    if ($http_x_admin_token = "") {
        return 403;
    }
    
    proxy_pass http://backend;
}