CVE-2025-12039 is a vulnerability identified in the BigBuy Dropshipping Connector for WooCommerce plugin for WordPress, affecting all versions up to and including 2.0.5. The core issue stems from insufficient validation of IP addresses and the plugin’s reliance on user-supplied HTTP headers (such as X-Forwarded-For) as the primary method for determining client IP addresses. This design flaw allows an unauthenticated attacker to spoof their IP address by manipulating these headers. By doing so, the attacker can bypass IP-based access controls or filters implemented by the plugin or the hosting environment. More critically, this vulnerability enables the attacker to retrieve the output of the phpinfo() function, which is typically used for debugging and displays detailed information about the PHP environment, including server configuration, loaded modules, environment variables, and potentially sensitive data such as paths and credentials. The vulnerability is classified under CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor). The CVSS v3.1 base score is 5.3, indicating a medium severity level. The vector string (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N) indicates that the attack can be performed remotely over the network without any privileges or user interaction, and it impacts confidentiality with limited scope. No known exploits have been reported in the wild as of the publication date (November 21, 2025). The vulnerability affects the BigBuy Dropshipping Connector plugin, which integrates WooCommerce stores with BigBuy’s dropshipping services, a popular e-commerce model in Europe. The exposure of phpinfo() output can aid attackers in crafting further targeted attacks by revealing server internals and configuration details.

For European organizations, especially e-commerce businesses using WooCommerce with the BigBuy Dropshipping Connector plugin, this vulnerability poses a risk of sensitive information leakage. The phpinfo() output can reveal server environment details, PHP version, loaded extensions, and configuration settings, which can be leveraged by attackers to identify additional vulnerabilities or misconfigurations. While the vulnerability does not directly allow code execution or data modification, the information disclosure can facilitate subsequent attacks such as privilege escalation, remote code execution, or targeted phishing campaigns. This is particularly concerning for organizations handling sensitive customer data or payment information. The impact is heightened in sectors with high e-commerce activity, including retail, logistics, and supply chain management. Additionally, organizations that rely on IP-based access controls for security may find those controls bypassed, increasing exposure. The lack of authentication and user interaction requirements means attackers can exploit this vulnerability at scale, potentially targeting multiple organizations simultaneously.

1. Monitor the vendor’s official channels for patches or updates addressing this vulnerability and apply them promptly once available. 2. Until a patch is released, implement server-side validation of IP addresses, ignoring or sanitizing user-supplied HTTP headers such as X-Forwarded-For, X-Real-IP, or similar headers to prevent spoofing. 3. Restrict access to the phpinfo() function output by disabling it in production environments or limiting access via web server configuration or application-level controls. 4. Employ Web Application Firewalls (WAFs) with rules to detect and block suspicious header manipulations or attempts to access phpinfo() endpoints. 5. Conduct regular security audits and penetration tests focusing on IP spoofing and information disclosure vectors. 6. Educate development and operations teams about secure handling of client IP addresses and the risks of trusting user-supplied headers. 7. Consider isolating or sandboxing the plugin environment to limit the impact of potential information disclosure. 8. Review and tighten IP-based access control policies to ensure they do not rely solely on client-supplied headers.