CVE-2025-62005 identifies a Cross-Site Request Forgery (CSRF) vulnerability in the SUMO Memberships plugin for WooCommerce developed by FantasticPlugins. This vulnerability affects all versions prior to 7.8.0. CSRF vulnerabilities occur when an attacker tricks an authenticated user into submitting a forged HTTP request, causing the user’s browser to perform unwanted actions on a web application where they are logged in. In this case, the vulnerability allows an attacker to induce actions related to membership management without the victim’s consent. The CVSS 3.1 base score is 7.1, reflecting a high severity due to the network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), but requiring user interaction (UI:R). The impact on confidentiality is high (C:H) because unauthorized changes could expose or alter membership data, while integrity impact is low (I:L) and availability is unaffected (A:N). The vulnerability does not require prior authentication, increasing its risk profile. Although no public exploits are currently known, the widespread use of WooCommerce and this plugin in e-commerce environments makes this a significant threat. The vulnerability was reserved on October 7, 2025, and published on October 22, 2025. No patches or exploit details are currently provided, indicating a need for vigilance and proactive mitigation.

For European organizations, especially those operating e-commerce platforms using WooCommerce with the SUMO Memberships plugin, this vulnerability poses a significant risk. Attackers could exploit the CSRF flaw to manipulate membership settings, potentially granting unauthorized access or altering user privileges, which could lead to data leakage or fraud. This compromises the confidentiality of membership data and could undermine customer trust. Although availability is not directly impacted, unauthorized changes could disrupt business operations or lead to financial losses. The ease of exploitation without authentication and the requirement for user interaction means phishing or social engineering could be leveraged to trigger the attack. Organizations handling sensitive customer data or subscription services are particularly vulnerable. The threat is heightened in sectors with strict data protection regulations like GDPR, where unauthorized data exposure can result in legal and financial penalties.

Immediate mitigation should focus on updating the SUMO Memberships plugin to version 7.8.0 or later once the patch is released by FantasticPlugins. Until then, organizations should implement strict anti-CSRF protections such as verifying CSRF tokens on all state-changing requests related to membership management. Restrict administrative access to trusted networks and users, and enforce multi-factor authentication to reduce risk from compromised accounts. Monitor web server logs and application behavior for unusual or unauthorized membership changes. Educate users and administrators about phishing risks to reduce the chance of user interaction exploitation. Consider deploying Web Application Firewalls (WAFs) with custom rules to detect and block suspicious CSRF attempts targeting the plugin’s endpoints. Regularly audit plugin usage and permissions to minimize attack surface. Engage with the vendor for timely updates and security advisories.