CVE-2025-11237 is a vulnerability classified under CWE-862 (Missing Authorization) found in the Make Email Customizer for WooCommerce WordPress plugin, affecting versions through 1.0.6. The issue arises because the plugin’s AJAX actions lack proper authorization checks and option validation, allowing any authenticated user, including those with minimal privileges such as Subscribers, to update arbitrary WordPress options. This means that an attacker with a valid low-level account can manipulate site-wide settings without requiring administrative privileges or additional user interaction. The vulnerability is remotely exploitable over the network (AV:N), requires no privileges (PR:N) beyond authentication, and no user interaction (UI:N), with an unchanged scope (S:U). The CVSS v3.1 base score is 5.3, indicating a medium severity level. Although no known exploits are currently reported in the wild, the flaw could be leveraged to alter configurations that may weaken site security or disrupt operations. The lack of patch links suggests that a fix may not yet be publicly available, emphasizing the need for immediate mitigation steps. The vulnerability impacts the confidentiality of site configuration but does not directly affect integrity or availability. The plugin is used in WooCommerce environments, which are prevalent in e-commerce websites built on WordPress.

For European organizations, especially those operating e-commerce platforms using WooCommerce with the Make Email Customizer plugin, this vulnerability poses a risk of unauthorized configuration changes by low-privileged users. Such unauthorized modifications could lead to misconfiguration, exposure of sensitive information, or indirect facilitation of further attacks. While the vulnerability does not directly compromise data integrity or availability, the ability to alter options could enable attackers to weaken security controls or disrupt email customization workflows, potentially impacting customer communications and trust. Organizations with large user bases or multiple subscriber-level accounts face higher risk, as attackers can exploit any compromised or legitimate low-privileged account. This could result in reputational damage, compliance issues under GDPR if personal data is indirectly exposed, and operational disruptions. The medium severity score reflects a moderate but non-trivial threat that requires timely attention.

European organizations should immediately audit their WordPress installations to identify the presence of the Make Email Customizer for WooCommerce plugin and its version. Until an official patch is released, administrators should restrict access to the plugin’s AJAX endpoints by implementing custom authorization checks, ensuring only trusted roles (e.g., administrators) can invoke sensitive actions. Applying Web Application Firewall (WAF) rules to block unauthorized AJAX requests targeting the plugin’s endpoints can provide a temporary barrier. Additionally, organizations should review and harden user role assignments, minimizing the number of users with authenticated access and ensuring subscriber accounts are tightly controlled. Monitoring logs for unusual option update activities can help detect exploitation attempts. Once a patch becomes available, it should be applied promptly. Regular backups and incident response plans should be updated to address potential misuse of this vulnerability.