The vulnerability identified as CVE-2025-67580 affects the Constant Contact + WooCommerce plugin, a tool widely used to integrate email marketing services with WooCommerce e-commerce platforms. The core issue is a Missing Authorization vulnerability, meaning that the plugin fails to properly enforce access control checks on certain operations or endpoints. This misconfiguration allows an attacker to perform actions or access data without the necessary permissions, effectively bypassing security controls. The affected versions include all releases up to and including 2.4.1. Although the exact technical details such as specific endpoints or functions affected are not disclosed, the vulnerability stems from incorrectly configured access control security levels within the plugin. This can lead to unauthorized access to sensitive customer data, manipulation of marketing lists, or unauthorized changes to e-commerce settings. No CVSS score has been assigned yet, and there are no known exploits in the wild, indicating that the vulnerability is newly disclosed and not yet actively exploited. The vulnerability was published on December 9, 2025, by Patchstack, a known assigner of security advisories for WordPress plugins. The lack of a patch link suggests that fixes may still be pending or in development. The plugin’s integration role between WooCommerce and Constant Contact means that exploitation could impact both marketing and sales data integrity and confidentiality. Attackers do not require user interaction but must have some level of access to the WordPress environment where the plugin is installed. This vulnerability highlights the critical importance of proper access control implementation in plugins that handle sensitive customer and transactional data.

For European organizations, the impact of CVE-2025-67580 can be significant, especially for those relying on WooCommerce combined with Constant Contact for their e-commerce and marketing operations. Unauthorized access could lead to exposure or manipulation of customer contact information, marketing lists, and order data, potentially violating GDPR and other data protection regulations. This could result in reputational damage, regulatory fines, and loss of customer trust. Additionally, attackers might alter marketing campaigns or e-commerce configurations, disrupting business operations and revenue streams. The vulnerability could also be leveraged as a foothold for further attacks within the affected WordPress environment, increasing the risk of broader compromise. Given the widespread use of WooCommerce in Europe, especially among small and medium-sized enterprises, the scope of affected systems is considerable. The absence of known exploits currently provides a window for proactive mitigation, but the risk of exploitation will increase once exploit code becomes available. The vulnerability’s impact on confidentiality and integrity is high, while availability impact is moderate unless attackers use the access to disrupt services.

European organizations should immediately audit their WordPress environments to identify installations of the Constant Contact + WooCommerce plugin, particularly versions up to 2.4.1. Until an official patch is released, restrict access to WordPress admin areas and plugin management interfaces to trusted personnel only, employing strong authentication mechanisms such as multi-factor authentication (MFA). Review and tighten user roles and permissions to ensure least privilege principles are enforced, minimizing the number of users who can interact with the plugin’s settings. Monitor logs for unusual activity related to the plugin, such as unauthorized API calls or configuration changes. Consider temporarily disabling or uninstalling the plugin if it is not critical to operations until a patch is available. Stay informed through official vendor channels and security advisories for the release of patches or updates. Additionally, implement web application firewalls (WAFs) with rules tailored to detect and block suspicious requests targeting the plugin. Conduct regular security assessments and penetration tests focusing on plugin vulnerabilities and access control weaknesses. Finally, educate IT and security teams about the risks associated with plugin vulnerabilities and the importance of timely patching.