CVE-2025-5071 is an authorization bypass vulnerability in the tigroumeow AI Engine plugin for WordPress, specifically affecting versions 2.8.0 through 2.8.3. The root cause is a missing capability check in the 'Meow_MWAI_Labs_MCP::can_access_mcp' function, which is responsible for verifying whether a user has permission to access the plugin's management control panel (MCP). Due to this flaw, any authenticated user with subscriber-level access or higher can bypass intended access restrictions and gain full control over the MCP. This elevated access allows execution of critical WordPress commands such as 'wp_create_user', 'wp_update_user', and 'wp_update_option', facilitating privilege escalation by creating or modifying user accounts and changing site options. Additionally, commands like 'wp_update_post', 'wp_delete_post', 'wp_update_comment', and 'wp_delete_comment' enable unauthorized editing or deletion of site content and comments. The vulnerability does not require user interaction and can be exploited remotely over the network, as indicated by the CVSS vector (AV:N/AC:L/PR:L/UI:N). The impact spans confidentiality, integrity, and availability, as attackers can manipulate data, escalate privileges, and disrupt site content. No patches are currently linked, and no known exploits have been reported in the wild as of the publication date. However, the high CVSS score of 8.8 reflects the critical nature of the vulnerability and the urgency for remediation.

The vulnerability poses a significant risk to organizations running WordPress sites with the tigroumeow AI Engine plugin versions 2.8.0 to 2.8.3. Attackers with minimal privileges (subscriber-level) can escalate their privileges to administrator-level by exploiting the missing authorization check, potentially gaining full control over the WordPress environment. This can lead to unauthorized creation or modification of user accounts, enabling persistent backdoors or insider threats. Furthermore, attackers can manipulate or delete posts and comments, damaging the integrity and availability of website content, which can harm reputation and user trust. The ability to update site options may allow attackers to alter site configurations, potentially leading to further compromise or denial of service. Given WordPress's widespread use globally, this vulnerability could be leveraged in targeted attacks against organizations relying on this plugin, including businesses, government agencies, and media outlets. The lack of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, especially as exploit code may emerge rapidly after public disclosure.

1. Immediate upgrade: Organizations should update the tigroumeow AI Engine plugin to a patched version once available. In the absence of an official patch, consider temporarily disabling or uninstalling the plugin to eliminate the attack surface. 2. Access restriction: Limit subscriber-level user registrations and audit existing user roles to ensure no unnecessary privileges are granted. 3. Implement Web Application Firewall (WAF) rules to monitor and block suspicious requests targeting the MCP endpoints or commands associated with the plugin. 4. Monitor logs for unusual activity related to user creation, updates, or content modifications that could indicate exploitation attempts. 5. Harden WordPress security by enforcing strong authentication mechanisms, such as multi-factor authentication for all users with elevated privileges. 6. Conduct regular security audits and vulnerability scans focusing on plugins and their access controls. 7. If feasible, apply custom code or filters to enforce capability checks on the MCP functions as a temporary workaround until official patches are released. 8. Educate site administrators and users about the risks of privilege escalation and encourage prompt reporting of suspicious behavior.