CVE-2025-12825 is a vulnerability classified under CWE-862 (Missing Authorization) found in the 'User Registration Using Contact Form 7' WordPress plugin developed by zealopensource. The flaw exists in the 'get_cf7_form_data' function, which lacks proper capability checks, allowing unauthenticated users to retrieve sensitive form configuration data. This data includes Facebook app secrets embedded in the form settings, which are critical credentials used for Facebook API integrations. Since the vulnerability does not require any authentication or user interaction, attackers can remotely exploit it simply by sending crafted requests to the vulnerable endpoint. The exposure of Facebook app secrets can lead to unauthorized access to Facebook applications, enabling attackers to impersonate the application, harvest user data, or conduct phishing attacks leveraging Facebook's platform. The vulnerability affects all versions of the plugin up to and including 2.5, with no patches currently available. The CVSS v3.1 base score is 5.3, indicating a medium severity primarily due to the confidentiality impact (C:L), no impact on integrity or availability, no privileges required, and no user interaction needed. No known exploits have been reported in the wild as of the publication date. The plugin is widely used in WordPress environments that integrate user registration with Contact Form 7, a popular form-building plugin. The missing authorization check represents a critical lapse in access control, exposing sensitive credentials that should be protected. This vulnerability highlights the importance of secure coding practices, especially in plugins handling third-party API secrets.

For European organizations, this vulnerability poses a significant confidentiality risk. Organizations using the affected plugin on WordPress sites that integrate Facebook login or other Facebook API features could have their Facebook app secrets exposed. This exposure can lead to unauthorized access to Facebook applications, potentially resulting in data breaches, user impersonation, or phishing campaigns targeting customers or employees. The impact is particularly relevant for sectors relying heavily on social media integrations for authentication or marketing, such as e-commerce, media, and public services. While the vulnerability does not affect system integrity or availability directly, the compromise of Facebook app secrets can cascade into broader security incidents, including reputational damage and regulatory non-compliance under GDPR if personal data is exposed. The ease of exploitation (no authentication or user interaction required) increases the likelihood of attacks, especially in environments where the plugin is publicly accessible. Organizations with high traffic WordPress sites or those using Facebook apps for critical business functions should consider this vulnerability a priority. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, as attackers may develop exploits rapidly once the vulnerability is public.

1. Immediately restrict access to the vulnerable plugin endpoints by implementing web application firewall (WAF) rules that block unauthorized requests to the 'get_cf7_form_data' function or related URLs. 2. Disable or remove the 'User Registration Using Contact Form 7' plugin if it is not essential, or replace it with a more secure alternative that enforces proper authorization. 3. Monitor web server logs for unusual or repeated access attempts to the plugin's endpoints, which may indicate exploitation attempts. 4. Limit exposure of Facebook app secrets by rotating these credentials if there is any suspicion of compromise. 5. Implement strict access controls on WordPress admin and plugin directories to prevent unauthorized access. 6. Follow the vendor's updates closely and apply patches as soon as they become available. 7. Educate developers and administrators about secure coding and authorization checks to prevent similar issues in custom plugins or integrations. 8. Conduct regular security audits and penetration testing focusing on plugin vulnerabilities and API secret management. 9. Use environment variables or secure vaults to store sensitive credentials rather than embedding them in plugin settings where possible. 10. Employ multi-factor authentication (MFA) on WordPress admin accounts to reduce risk from compromised credentials.