CVE-2025-52757 identifies a missing authorization vulnerability in the FantasticPlugins SUMO Memberships for WooCommerce plugin, versions up to and including 7.6.0. This flaw arises from incorrectly configured access control security levels within the plugin, which manages membership functionalities in WooCommerce-based e-commerce sites. The vulnerability allows an unauthenticated attacker to exploit the plugin remotely, but requires user interaction, such as clicking a crafted link or performing a specific action that triggers the vulnerability. The CVSS 3.1 score of 6.3 (medium severity) reflects the attack vector as network-based with low attack complexity and no privileges required, but user interaction is necessary. The impact includes limited confidentiality, integrity, and availability losses, meaning attackers could potentially access or manipulate membership data or disrupt membership services to some extent. No public exploits or active exploitation campaigns have been reported, but the vulnerability's presence in a widely used e-commerce plugin makes it a significant concern. The lack of available patches at the time of publication necessitates immediate mitigation efforts by administrators. This vulnerability highlights the critical importance of proper authorization checks in membership management plugins to prevent unauthorized access and potential data leakage or service disruption.

For European organizations, especially those running WooCommerce-based e-commerce platforms with the SUMO Memberships plugin, this vulnerability poses a risk of unauthorized access to membership data and potential manipulation of membership privileges. This can lead to data confidentiality breaches, such as exposure of member information, and integrity issues, including unauthorized changes to membership status or entitlements. Availability impacts could manifest as disruption of membership services, affecting customer experience and trust. Given the plugin's role in managing paid memberships, exploitation could also result in financial losses or reputational damage. The medium severity rating suggests that while the impact is not catastrophic, it is significant enough to warrant prompt attention. Organizations in sectors with high e-commerce activity, such as retail, subscription services, and digital content providers, are particularly vulnerable. The requirement for user interaction means phishing or social engineering could be vectors for exploitation, increasing the risk profile. Failure to address this vulnerability could lead to compliance issues under GDPR if personal data is exposed or mishandled.

1. Immediately review and restrict access permissions related to the SUMO Memberships plugin within WooCommerce, ensuring only trusted users and roles have membership management capabilities. 2. Monitor web server and application logs for unusual access patterns or suspicious user interactions that could indicate exploitation attempts. 3. Implement web application firewall (WAF) rules to detect and block requests that attempt to exploit access control weaknesses in the plugin. 4. Educate users and administrators about phishing and social engineering risks, emphasizing caution with unsolicited links or actions related to membership management. 5. Regularly back up membership and e-commerce data to enable recovery in case of integrity or availability compromise. 6. Stay informed about vendor updates and apply patches promptly once available. 7. Consider temporarily disabling the SUMO Memberships plugin if feasible until a secure version is released. 8. Conduct an internal audit of membership-related workflows to identify and close any additional access control gaps. 9. Use principle of least privilege for all WooCommerce and WordPress user roles to minimize potential exploitation impact. 10. Engage with security professionals to perform penetration testing focused on membership management functionalities.