CVE-2025-47532 is a critical security vulnerability classified under CWE-502, which pertains to the deserialization of untrusted data. This vulnerability affects the CoinPayments.net Payment Gateway plugin for WooCommerce, a widely used e-commerce platform for WordPress. The issue exists in versions up to and including 1.0.17 of the plugin. Deserialization vulnerabilities occur when untrusted input is processed by an application’s deserialization mechanism, allowing an attacker to manipulate serialized objects to inject malicious payloads. In this case, the vulnerability enables object injection, which can lead to remote code execution, privilege escalation, or other severe impacts on the affected system. The CVSS v3.1 base score is 9.8, indicating a critical severity level. The vector string (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) reveals that the attack can be executed remotely over the network without any authentication or user interaction, with low attack complexity, and results in high impact on confidentiality, integrity, and availability. Although no known exploits are currently reported in the wild, the nature of the vulnerability and the critical CVSS score suggest that exploitation could have devastating consequences. The plugin’s role in processing payment transactions makes it a high-value target for attackers aiming to steal payment information, inject malicious code, or disrupt e-commerce operations. The lack of available patches at the time of publication further increases the urgency for mitigation.

For European organizations, especially those operating e-commerce sites using WooCommerce with the CoinPayments.net Payment Gateway, this vulnerability poses a significant risk. Successful exploitation could lead to unauthorized access to sensitive payment data, financial theft, and compromise of customer information, violating GDPR and other data protection regulations. The integrity and availability of the payment processing system could be severely disrupted, leading to loss of revenue, reputational damage, and potential legal liabilities. Given the critical nature of the vulnerability and the absence of required authentication or user interaction, attackers could automate exploitation attempts, increasing the likelihood of widespread attacks. Organizations in sectors such as retail, digital services, and financial technology that rely on this payment gateway are particularly vulnerable. Additionally, the breach of payment infrastructure could have cascading effects on supply chains and customer trust across Europe.

Immediate mitigation steps should include: 1) Temporarily disabling the CoinPayments.net Payment Gateway plugin until a security patch is released. 2) Monitoring network traffic and application logs for unusual deserialization activity or unexpected object payloads. 3) Implementing Web Application Firewalls (WAFs) with custom rules to detect and block suspicious serialized data patterns targeting the plugin. 4) Restricting access to the WooCommerce administrative interface and payment processing endpoints through IP whitelisting or VPNs to reduce exposure. 5) Applying the principle of least privilege to the web server and application environment to limit the impact of a potential compromise. 6) Regularly updating all WordPress plugins and themes to their latest versions once patches become available. 7) Conducting security audits and penetration testing focused on deserialization vulnerabilities. 8) Educating development and operations teams about secure coding practices related to serialization and deserialization. These measures go beyond generic advice by focusing on immediate containment, detection, and environment hardening specific to this vulnerability and the affected plugin.