CVE-2026-54842
Royal Plugins · Royal MCP
A missing authorization vulnerability in Royal Plugins' Royal MCP allows attackers to exploit incorrectly configured access control settings.
Executive summary
A critical missing authorization vulnerability in the Royal MCP plugin exposes the application to unauthorized configuration changes and potential privilege escalation.
Vulnerability
The vulnerability stems from a missing capability check, which allows users—potentially including unauthenticated or low-privileged attackers—to interact with functions that should be restricted to administrative roles.
Business impact
The inability to properly enforce authorization permits unauthorized users to modify plugin settings or access sensitive data, leading to severe reputational damage and potential system takeover. With a CVSS score of 8.1, this represents a significant security oversight that requires immediate attention to prevent unauthorized administrative actions.
Remediation
Immediate Action: Update the Royal MCP plugin to the latest version immediately to ensure that correct authorization checks are implemented.
Proactive Monitoring: Monitor site activity logs for unauthorized administrative actions or modifications to plugin configurations.
Compensating Controls: Disable the Royal MCP plugin until an update is applied and verify that file permissions are set to prevent unauthorized modification of plugin code.
Exploitation status
Public Exploit Available: false
Analyst recommendation
Security teams should immediately audit their WordPress or CMS environments for the Royal MCP plugin. Given the risk of unauthorized access, the plugin should be disabled or updated as a matter of urgency to maintain the security integrity of the platform.