CVE-2025-8570 in BeyondCart Connector Plugin
Summary
by MITRE • 09/11/2025
The BeyondCart Connector plugin for WordPress is vulnerable to Privilege Escalation due to improper JWT secret management and authorization within the determine_current_user filter in versions 1.4.2 through 2.1.0. This makes it possible for unauthenticated attackers to craft valid tokens and assume any user’s identity.
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Analysis
by VulDB Data Team • 09/11/2025
The BeyondCart Connector plugin for WordPress presents a critical privilege escalation vulnerability that stems from flawed JWT secret management practices and inadequate authorization controls. This vulnerability exists within the determine_current_user filter functionality and affects all plugin versions from 1.4.2 through 2.1.0, creating a persistent security weakness that can be exploited by unauthenticated attackers to assume arbitrary user identities. The flaw represents a fundamental breakdown in the plugin's authentication architecture where the JWT secret is either hardcoded, poorly managed, or exposed through insecure configuration practices.
The technical implementation of this vulnerability involves the improper handling of JSON Web Tokens within the WordPress user authentication pipeline. When the determine_current_user filter processes incoming requests, it fails to properly validate the JWT signatures or verify the authenticity of the tokens being presented. This weakness allows attackers to generate valid JWT tokens without proper authentication credentials, effectively bypassing the standard WordPress authentication mechanisms. The vulnerability operates at the core of WordPress's user session management system, where legitimate user identities can be forged through crafted token manipulation.
From an operational impact perspective, this privilege escalation vulnerability enables attackers to assume any user's identity within the WordPress environment, potentially gaining access to administrative functions, content management capabilities, and sensitive data. The unauthenticated nature of the attack means that no prior credentials or access are required to exploit this weakness, making it particularly dangerous for WordPress installations that rely on the BeyondCart Connector plugin. The vulnerability can be leveraged to perform actions such as modifying content, deleting files, creating new users, or accessing confidential information that would normally be restricted to authorized personnel.
The security implications of this vulnerability align with CWE-287 which addresses improper authentication issues in software systems. This weakness creates a direct pathway for attackers to escalate their privileges within the WordPress ecosystem, potentially leading to complete system compromise. The vulnerability also maps to ATT&CK technique T1078 which covers valid accounts and legitimate credentials as a means of gaining access to systems. Organizations using this plugin should immediately implement mitigations including plugin version updates, JWT secret rotation, and enhanced monitoring of authentication-related activities. The recommended approach includes disabling the vulnerable plugin until a patched version is available, implementing strict access controls, and conducting comprehensive security audits of all authentication mechanisms within the WordPress environment.