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 data within the facebook_ajax_login_callback() function. Specifically, the plugin fails to properly log in users based on previously verified data, allowing an unauthenticated attacker to bypass normal authentication controls. Exploitation requires the attacker to have an existing user account on the targeted WordPress site and access to the administrative user's email address. By leveraging this flaw, the attacker can escalate privileges and gain administrative access to the site without valid authentication. This vulnerability is classified under CWE-288, which involves authentication bypass using an alternate path or channel. The CVSS v3.1 base score is 8.1, reflecting high impact on confidentiality, integrity, and availability, with network attack vector, no privileges required, no user interaction, but high attack complexity. 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 commonly used in WordPress environments that integrate Facebook login capabilities.

For European organizations, this vulnerability poses a significant risk, especially for those relying on WordPress sites with the Bravis User plugin installed for user authentication and management. Successful exploitation allows attackers to gain administrative control over the affected WordPress site, potentially leading to unauthorized data access, site defacement, insertion of malicious content, or pivoting to other internal systems. Given the reliance on email access for exploitation, organizations with weak email security or compromised email accounts are at higher risk. The breach of administrative privileges can result in severe confidentiality breaches of sensitive customer or business data, integrity violations through unauthorized content changes, and availability impacts if the site is defaced or taken offline. This can damage organizational reputation, lead to regulatory non-compliance under GDPR, and cause financial losses. The vulnerability's network accessibility and lack of required user interaction increase the likelihood of remote exploitation, making it a critical concern for European enterprises with public-facing WordPress sites.

Immediate mitigation steps include disabling the Bravis User plugin until a security patch is released. Organizations should monitor for updates from the vendor and apply patches promptly once available. In the interim, restrict administrative access to trusted IP addresses via web application firewalls or server-level access controls. Enforce strong email security practices, including multi-factor authentication (MFA) for email accounts associated with administrative users to prevent attackers from leveraging compromised emails. Implement monitoring and alerting for unusual login activities or privilege escalations within WordPress. Consider deploying additional authentication layers such as two-factor authentication (2FA) for WordPress admin accounts to reduce risk. Conduct thorough audits of existing user accounts to identify and remove any unauthorized or suspicious accounts. Regularly back up WordPress sites and databases to enable recovery in case of compromise. Finally, educate site administrators about this vulnerability and the importance of email security hygiene.