CVE-2025-3780 is a security vulnerability identified in the WCFM – Frontend Manager for WooCommerce along with Bookings Subscription Listings Compatible plugin for WordPress, developed by wclovers. This vulnerability arises from a missing authorization check (CWE-862) in the function wcfm_redirect_to_setup, which is responsible for redirecting users to the plugin setup interface. Due to the absence of proper capability verification, unauthenticated attackers can exploit this flaw to access and modify sensitive plugin settings without any authentication or user interaction. Specifically, attackers can view and alter critical configuration data such as payment details and API keys. The vulnerability affects all versions up to and including 6.7.16 of the plugin. The CVSS v3.1 base score is 6.5, indicating a medium severity level. The attack vector is network-based (AV:N), requires no privileges (PR:N), no user interaction (UI:N), and impacts confidentiality and integrity but not availability. No known exploits are currently reported in the wild, and no official patches have been released at the time of this analysis. This vulnerability is particularly dangerous because it allows unauthorized modification of financial and integration settings, which could lead to fraudulent transactions, data leakage, or further compromise of the affected WordPress environment.

For European organizations using WooCommerce with the WCFM Frontend Manager plugin, this vulnerability poses a significant risk to the confidentiality and integrity of e-commerce operations. Unauthorized access to payment details and API keys can lead to financial fraud, theft of customer payment information, and unauthorized transactions. Additionally, attackers could manipulate subscription and booking data, disrupting business operations and damaging customer trust. Given the widespread use of WooCommerce in Europe, especially among small and medium-sized enterprises (SMEs) in retail and services sectors, exploitation could result in regulatory non-compliance issues under GDPR due to exposure of personal and payment data. The lack of authentication requirement makes it easier for remote attackers to exploit this vulnerability without needing to compromise user credentials, increasing the attack surface. Although availability is not directly impacted, the indirect consequences such as reputational damage and potential legal liabilities could be severe.

European organizations should immediately audit their WordPress installations to identify the presence of the vulnerable WCFM plugin versions. Until an official patch is released, the following specific mitigations are recommended: 1) Restrict access to the WordPress admin and plugin setup URLs using web application firewalls (WAFs) or IP whitelisting to prevent unauthorized external access. 2) Implement strict role-based access controls within WordPress to limit plugin management capabilities to trusted administrators only. 3) Monitor logs for unusual access patterns to the wcfm_redirect_to_setup function or related endpoints. 4) Temporarily disable or remove the WCFM plugin if feasible, especially in high-risk environments. 5) Regularly back up plugin configuration and payment data to enable quick recovery in case of compromise. 6) Employ security plugins that can detect unauthorized changes to plugin settings or files. 7) Educate site administrators about the vulnerability and the importance of applying updates promptly once patches become available. These measures go beyond generic advice by focusing on access control hardening and proactive monitoring tailored to this specific vulnerability.