CVE-2025-49907 identifies a missing authorization vulnerability in the RealMag777 MDTF (wp-meta-data-filter-and-taxonomy-filter) WordPress plugin. This plugin is designed to enhance filtering capabilities on WordPress sites by allowing metadata and taxonomy-based filtering. The vulnerability arises due to incorrectly configured access control security levels, which fail to properly verify whether a user has the necessary permissions before accessing certain plugin functions or data. Specifically, attackers with low privileges (PR:L) can exploit this flaw remotely (AV:N) without requiring user interaction (UI:N). The vulnerability impacts confidentiality (C:L) but does not affect integrity or availability. The affected versions include all MDTF versions up to 1.3.3.9. The CVSS 3.1 base score is 4.3, indicating medium severity. No patches or known exploits are currently available, but the issue has been publicly disclosed as of October 22, 2025. This vulnerability could allow unauthorized data disclosure or information leakage within WordPress sites using the affected plugin, potentially exposing sensitive metadata or taxonomy information that should be restricted. The lack of proper authorization checks means that attackers could bypass intended access controls, leading to privacy concerns or data exposure risks.

For European organizations, the primary impact of CVE-2025-49907 is the potential unauthorized disclosure of sensitive metadata or taxonomy-related information managed by the MDTF plugin on WordPress sites. This could affect confidentiality of internal categorizations, user data, or business-related metadata, which may be leveraged for further attacks or competitive intelligence gathering. While the vulnerability does not affect data integrity or availability, unauthorized access to metadata could undermine trust and compliance with data protection regulations such as GDPR if personal or sensitive information is exposed. Organizations relying on WordPress for e-commerce, media, or content management are particularly at risk, as metadata often supports critical business functions. The absence of known exploits reduces immediate risk, but the public disclosure increases the likelihood of future exploitation attempts. Failure to address this vulnerability could lead to reputational damage, regulatory scrutiny, and potential data breaches within European entities.

To mitigate CVE-2025-49907, European organizations should first verify if their WordPress installations utilize the RealMag777 MDTF plugin and identify the version in use. Immediate steps include: 1) Applying any available patches or updates from the vendor once released; 2) If patches are not yet available, restrict access to the plugin’s functionality by limiting user roles and permissions to trusted administrators only; 3) Implement Web Application Firewall (WAF) rules to monitor and block suspicious requests targeting the MDTF plugin endpoints; 4) Conduct thorough access control reviews on WordPress user roles to ensure least privilege principles are enforced; 5) Monitor logs for unusual access patterns or unauthorized attempts to access metadata filtering features; 6) Consider temporarily disabling the MDTF plugin if it is not critical to operations until a secure version is available; 7) Educate site administrators on the risks of missing authorization vulnerabilities and the importance of timely updates. These targeted actions go beyond generic advice by focusing on access control hardening and proactive monitoring specific to this plugin’s context.