CVE-2025-7696 is a critical vulnerability classified under CWE-502 (Deserialization of Untrusted Data) affecting the crmperks Integration plugin for Pipedrive and popular WordPress form plugins including Contact Form 7, WPForms, Elementor, and Ninja Forms. The vulnerability exists in all versions up to 1.2.3 due to unsafe deserialization in the verify_field_val() function, which processes untrusted input without proper validation or sanitization. This flaw enables unauthenticated attackers to perform PHP Object Injection, a technique where crafted serialized objects are injected and deserialized, allowing execution of arbitrary code paths. The presence of a Property Oriented Programming (POP) gadget chain in the Contact Form 7 plugin facilitates exploitation by enabling attackers to delete arbitrary files on the server. Deletion of critical files like wp-config.php can lead to denial of service by breaking the WordPress installation or even remote code execution if attackers leverage the altered state. The vulnerability is remotely exploitable over the network without any authentication or user interaction, making it highly dangerous. The CVSS v3.1 base score of 9.8 reflects its critical nature, with attack vector network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and high impact on confidentiality, integrity, and availability (C:H/I:H/A:H). Although no public exploits are currently known, the combination of widespread plugin usage and the severity of the flaw demands urgent attention from site administrators and developers.

The impact of CVE-2025-7696 is severe for organizations worldwide that use WordPress sites with the affected crmperks Integration plugin and associated form plugins. Successful exploitation can lead to complete compromise of the affected website, including unauthorized deletion of critical configuration files like wp-config.php, resulting in site downtime (denial of service) and potential remote code execution. This compromises confidentiality by exposing sensitive data, integrity by allowing unauthorized modifications or deletions, and availability by disrupting service. Attackers can gain persistent footholds, pivot within the hosting environment, or use compromised sites as launchpads for further attacks. Given the popularity of WordPress and the widespread use of these plugins, the threat surface is large, affecting small businesses, enterprises, and government websites alike. The lack of authentication or user interaction requirements lowers the barrier for exploitation, increasing the likelihood of automated attacks and mass exploitation campaigns once public exploits emerge.

To mitigate CVE-2025-7696, organizations should immediately audit their WordPress installations for the presence of the crmperks Integration plugin and the specified form plugins (Contact Form 7, WPForms, Elementor, Ninja Forms). Until an official patch is released, consider disabling or removing the vulnerable plugin to eliminate the attack vector. Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious serialized payloads or unusual POST requests targeting the verify_field_val() function. Restrict file system permissions to prevent unauthorized deletion or modification of critical files like wp-config.php, ensuring the web server user has minimal necessary privileges. Monitor logs for anomalous activity indicative of exploitation attempts, such as unexpected file deletions or serialized data in requests. Once patches are available, apply them promptly and verify plugin integrity. Additionally, implement defense-in-depth strategies including regular backups, intrusion detection systems, and network segmentation to limit damage from potential breaches. Educate development teams on secure coding practices to avoid unsafe deserialization in future plugin development.