CVE-2025-49907 identifies a missing authorization vulnerability in the RealMag777 MDTF (wp-meta-data-filter-and-taxonomy-filter) WordPress plugin, affecting versions up to and including 1.3.3.9. The vulnerability arises due to incorrectly configured access control security levels, allowing users with low privileges (authenticated users with limited rights) to access or invoke functionality that should be restricted. This missing authorization flaw means that certain plugin features can be exploited without proper permission checks, potentially exposing metadata or taxonomy filters that could reveal sensitive information or allow unauthorized data queries. The vulnerability is remotely exploitable over the network without requiring user interaction, but it does require the attacker to have at least low-level authenticated access (e.g., a subscriber or contributor role in WordPress). The CVSS v3.1 score of 4.3 reflects a medium severity level, primarily due to the limited confidentiality impact and no impact on integrity or availability. No known exploits have been reported in the wild as of the publication date, and no official patches have been linked yet. The vulnerability was reserved in June 2025 and published in October 2025. The plugin is commonly used to enhance WordPress site filtering capabilities, particularly in content-heavy or e-commerce sites that rely on taxonomy and metadata filtering for user navigation and search. The missing authorization could allow attackers to bypass intended access restrictions, potentially leading to information disclosure or unauthorized data access within the WordPress environment.

For European organizations, the impact of CVE-2025-49907 depends largely on the extent of RealMag777 MDTF plugin deployment within their WordPress infrastructure. Organizations running content-heavy websites, e-commerce platforms, or portals that rely on metadata and taxonomy filters for user experience are at risk of unauthorized data exposure. The confidentiality impact is limited but could lead to leakage of sensitive metadata or internal taxonomy structures, which might aid further reconnaissance or targeted attacks. Since the vulnerability does not affect data integrity or availability, the risk of service disruption or data manipulation is low. However, unauthorized access to metadata could violate data protection regulations such as GDPR if personal or sensitive information is indirectly exposed. The requirement for low-level authenticated access means that attackers must first compromise or register low-privilege accounts, which is a moderate barrier but not insurmountable. The absence of known exploits in the wild reduces immediate risk but does not eliminate the need for proactive mitigation. Overall, the vulnerability could be leveraged as part of a larger attack chain, especially in environments with weak user account controls or where the plugin is widely used.

European organizations should implement the following specific mitigations: 1) Monitor for and apply any official patches or updates from RealMag777 as soon as they become available to address the missing authorization flaw. 2) Restrict user roles and permissions in WordPress to minimize the number of accounts with low-level authenticated access that could exploit this vulnerability. 3) Implement web application firewalls (WAF) with custom rules to detect and block suspicious requests targeting MDTF plugin endpoints or parameters associated with metadata and taxonomy filtering. 4) Conduct regular audits of WordPress plugins and their configurations to identify and remediate insecure access controls. 5) Use security plugins that enforce stricter access control policies on plugin features and monitor for anomalous behavior. 6) Educate site administrators on the risks of installing and maintaining outdated or unpatched plugins, emphasizing the importance of timely updates. 7) Consider disabling or removing the MDTF plugin if it is not essential, or replacing it with alternative plugins that have a stronger security track record. 8) Implement logging and alerting on access to sensitive plugin functionality to detect potential exploitation attempts early.