Overview
The CVE-2025-7696 vulnerability is a critical security flaw that affects the Integration for Pipedrive and Contact Form 7, WPForms, Elementor, Ninja Forms plugin for WordPress. This vulnerability has been identified as a PHP Object Injection vulnerability, which can potentially lead to a system compromise or data leakage. This vulnerability matters immensely as it exposes a wide number of websites that use this popular WordPress plugin to significant security risks, including the potential for Denial of Service (DoS) attacks and remote code execution.
Vulnerability Summary
CVE ID: CVE-2025-7696
Severity: Critical (9.8 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Integration for Pipedrive and Contact Form 7, WPForms, Elementor, Ninja Forms plugin for WordPress | Up to and including 1.2.3
How the Exploit Works
The vulnerability exists due to the unsafe deserialization of untrusted input within the verify_field_val() function in the plugin. This can allow an unauthenticated attacker to inject a malicious PHP Object into the server, leading to arbitrary code execution. When combined with a POP (Property Oriented Programming) chain in the Contact Form 7 plugin, the attacker can delete arbitrary files on the server, potentially deleting the wp-config.php file which leads to a Denial of Service attack or even remote code execution.
Conceptual Example Code
Here is a conceptual example of how the vulnerability might be exploited:
POST /wp-admin/admin-ajax.php?action=pipedrive_cf7_integration HTTP/1.1
Host: vulnerable-website.com
Content-Type: application/x-www-form-urlencoded
cf7_form_id=1&form_data=O%3A8%3A%22stdClass%22%3A1%3A%7Bs%3A5%3A%22field%22%3BO%3A11%3A%22PipedriveAPI%22%3A1%3A%7Bs%3A6%3A%22delete%22%3Bs%3A12%3A%22wp-config.php%22%3B%7D%7DIn this example, the attacker sends a POST request to the vulnerable endpoint with a specially crafted `form_data` parameter that contains a serialized PHP object, which when deserialized, triggers the deletion of the wp-config.php file.
Mitigation Guidance
As a mitigation measure, it is recommended to apply the vendor patch as soon as it becomes available. In the meantime, implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can help to detect and prevent exploitation attempts.