CVE-2025-5060 is a high-severity authentication bypass vulnerability affecting the Bravis User plugin for WordPress, versions up to and including 1.0.0. The vulnerability arises from improper handling of authentication state within the plugin's facebook_ajax_login_callback() function. Specifically, although the plugin verifies user data via Facebook login, it fails to properly log the user in afterward. This flaw allows unauthenticated attackers who possess an existing user account on the affected WordPress site and have access to the administrative user's email address to bypass authentication controls and gain administrative privileges. The vulnerability is classified under CWE-288, which covers authentication bypass using alternate paths or channels. The CVSS v3.1 base score is 8.1, indicating high severity, with network attack vector, high attack complexity, no privileges required, no user interaction, and impacts on confidentiality, integrity, and availability. No known exploits are currently reported in the wild, and no patches have been published yet. The vulnerability affects all versions of the Bravis User plugin up to 1.0.0, which is a third-party WordPress plugin used to manage user authentication and integration with Facebook login. The flaw could allow attackers to escalate privileges to administrative level, potentially leading to full site compromise, data theft, defacement, or further malware deployment.

For European organizations using WordPress websites with the Bravis User plugin, this vulnerability poses a significant risk. Successful exploitation allows attackers to gain administrative access without proper authentication, enabling them to manipulate site content, access sensitive data, and potentially pivot to other internal systems. This can lead to data breaches involving personal data protected under GDPR, resulting in legal and financial penalties. The requirement for the attacker to have access to the administrative user's email may limit exploitation but does not eliminate risk, especially if email accounts are compromised or weakly protected. The high impact on confidentiality, integrity, and availability means that critical business websites, e-commerce platforms, or public-facing portals could be severely disrupted. Additionally, reputational damage and loss of customer trust are likely consequences. Since WordPress is widely used across Europe, especially by SMEs and public institutions, the vulnerability could have broad implications if not addressed promptly.

Immediate mitigation steps include disabling the Bravis User plugin until a patch is released. Organizations should monitor for updates from the vendor and apply patches as soon as they become available. In the interim, administrators should enforce strong email security measures, including multi-factor authentication (MFA) on administrative email accounts, to reduce the risk of email compromise. Implementing Web Application Firewalls (WAFs) with rules to detect and block suspicious login attempts related to Facebook authentication endpoints can provide additional protection. Regularly auditing user accounts for unauthorized privilege escalations and reviewing login logs for anomalies is advised. Organizations should also consider restricting administrative access by IP whitelisting or VPN-only access where feasible. Finally, educating users about phishing risks targeting administrative emails can help prevent attackers from gaining the necessary email access to exploit this vulnerability.