CVE-2025-67579 identifies a missing authorization vulnerability in the vanquish User Extra Fields WordPress plugin, versions up to 16.8. The vulnerability arises from incorrectly configured access control security levels within the plugin, which manages additional user metadata fields in WordPress. Due to this misconfiguration, unauthorized users can potentially access or modify user extra fields without proper permission checks. This could lead to unauthorized disclosure or alteration of sensitive user information stored in these extra fields. The vulnerability does not require user interaction but may require the attacker to have some form of access to the WordPress environment, such as a subscriber or contributor role, depending on the plugin's integration. No public exploits have been reported yet, and no official patches are linked at this time. The absence of a CVSS score necessitates an assessment based on impact and exploitability factors. The plugin is commonly used in WordPress sites to extend user profile capabilities, making it a target for attackers aiming to escalate privileges or manipulate user data. The flaw affects the confidentiality and integrity of user data and could be leveraged as a foothold for further attacks within compromised WordPress installations.

For European organizations, this vulnerability poses a significant risk to the confidentiality and integrity of user data managed through WordPress sites using the User Extra Fields plugin. Unauthorized access or modification of user metadata can lead to data breaches, privacy violations under GDPR, and potential reputational damage. Organizations relying on WordPress for e-commerce, customer portals, or internal communications may face service disruptions or data integrity issues. Attackers exploiting this vulnerability could manipulate user roles or data, potentially escalating privileges or bypassing other security controls. The lack of known exploits currently limits immediate widespread impact, but the vulnerability's nature suggests it could be exploited in targeted attacks. Compliance with European data protection regulations heightens the risk profile, as unauthorized data access could result in regulatory penalties. The vulnerability also increases the attack surface for supply chain attacks if compromised user data is leveraged for further infiltration.

Organizations should monitor vanquish vendor communications closely for official patches addressing CVE-2025-67579 and apply them promptly once available. In the interim, restrict access to WordPress administrative and user profile management interfaces to trusted personnel only. Conduct thorough audits of user roles and permissions to ensure minimal privilege principles are enforced, especially for contributors and subscribers who might exploit the vulnerability. Implement web application firewalls (WAFs) with custom rules to detect and block suspicious requests targeting user extra fields endpoints. Regularly review and sanitize user input fields to prevent injection or manipulation attempts. Consider disabling or replacing the User Extra Fields plugin if immediate patching is not feasible, especially in high-risk environments. Maintain comprehensive logging and monitoring to detect anomalous activities related to user metadata changes. Educate site administrators on the risks of unauthorized plugin configurations and the importance of timely updates.