CVE-2026-24353 is a Missing Authorization vulnerability found in the wpeverest User Registration WordPress plugin, affecting all versions up to and including 4.4.9. This vulnerability arises from incorrectly configured access control security levels, allowing an attacker with low privileges (PR:L) to bypass authorization checks and perform unauthorized actions on the user registration functionality. The attack vector is network-based (AV:N), requiring no user interaction (UI:N), and the scope remains unchanged (S:U). The vulnerability impacts confidentiality and integrity severely (C:H/I:H), but does not affect availability (A:N). Exploitation could allow unauthorized access to sensitive user data or manipulation of user registration processes, potentially enabling privilege escalation or data leakage. Although no public exploits are currently known, the vulnerability's characteristics make it a significant risk for WordPress sites using this plugin. The lack of a patch link indicates that a fix may not yet be publicly available, emphasizing the need for immediate mitigation steps. The vulnerability was published on January 22, 2026, and assigned a CVSS v3.1 score of 8.1, categorizing it as high severity. The issue is critical for organizations relying on this plugin for user management, as it undermines the fundamental access control mechanisms.

For European organizations, this vulnerability poses a significant risk to the confidentiality and integrity of user data managed via WordPress sites using the wpeverest User Registration plugin. Exploitation could lead to unauthorized access to personal data, violating GDPR and other data protection regulations, potentially resulting in legal penalties and reputational damage. The integrity of user registration processes could be compromised, allowing attackers to create fraudulent accounts or manipulate user roles, which could facilitate further attacks such as privilege escalation or lateral movement within the network. Although availability is not directly impacted, the indirect consequences of data breaches or unauthorized access could disrupt business operations. Organizations in sectors handling sensitive personal or financial data, such as healthcare, finance, and e-commerce, are particularly vulnerable. The widespread use of WordPress in Europe, combined with the popularity of the wpeverest plugin, increases the potential attack surface. The absence of known exploits in the wild provides a window for proactive defense, but the high CVSS score indicates that exploitation would be relatively straightforward once a working exploit is developed.

1. Monitor official wpeverest channels and Patchstack for the release of a security patch addressing CVE-2026-24353 and apply it immediately upon availability. 2. Until a patch is available, restrict access to the user registration endpoints by implementing IP whitelisting or VPN-only access where feasible. 3. Harden WordPress installations by enforcing the principle of least privilege: ensure that users and processes interacting with the plugin have only the minimum necessary permissions. 4. Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious requests targeting user registration functionalities. 5. Conduct regular audits of user accounts and registration logs to detect anomalies such as unauthorized account creations or privilege escalations. 6. Disable or replace the wpeverest User Registration plugin with alternative solutions that have verified secure access controls if immediate patching is not possible. 7. Educate administrators and developers about secure configuration practices to prevent similar authorization issues in custom or third-party plugins. 8. Implement comprehensive monitoring and alerting on WordPress admin activities to quickly identify potential exploitation attempts.