CVE-2025-60209 is a critical security vulnerability identified in the CRM Perks Connector for Gravity Forms and Google Sheets WordPress plugin, specifically affecting versions up to and including 1.2.6. The vulnerability arises from insecure deserialization of untrusted data, which allows attackers to perform object injection attacks. Deserialization vulnerabilities occur when untrusted input is processed by a program expecting serialized objects, enabling attackers to manipulate the input to inject malicious objects. In this case, the plugin fails to properly validate or sanitize serialized data before deserialization, leading to the possibility of remote code execution or other malicious actions. The vulnerability is remotely exploitable over the network without requiring any authentication or user interaction, significantly increasing the attack surface. The CVSS v3.1 base score of 9.8 reflects the critical severity, with attack vector being network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and high impact on confidentiality (C:H), integrity (I:H), and availability (A:H). Although no known exploits have been reported in the wild yet, the nature of the vulnerability makes it a prime target for attackers seeking to compromise WordPress sites that use this plugin to integrate Gravity Forms with Google Sheets. The plugin is commonly used to automate data transfer from form submissions to Google Sheets, often in CRM and business process workflows, making the impact of exploitation potentially severe, including data theft, site defacement, or full server takeover.

For European organizations, exploitation of CVE-2025-60209 could lead to severe consequences including unauthorized access to sensitive customer data, manipulation or deletion of critical business information, and disruption of business operations due to service outages or defacement. Since the plugin integrates form data with Google Sheets, attackers could intercept or alter data flows, impacting data integrity and confidentiality. Organizations relying on this integration for CRM or reporting purposes may face compliance risks under GDPR due to potential data breaches. The vulnerability’s ease of exploitation without authentication or user interaction increases the likelihood of widespread attacks, especially targeting small and medium enterprises that may not have robust security monitoring. Additionally, compromised WordPress sites could be leveraged as pivot points for lateral movement within corporate networks, amplifying the impact. The reputational damage and potential financial losses from remediation and regulatory fines could be substantial for affected European entities.

Immediate mitigation involves updating the CRM Perks Connector for Gravity Forms and Google Sheets plugin to a patched version once released by the vendor. Until a patch is available, organizations should consider disabling the plugin or the specific functionality that handles serialized data input. Implementing Web Application Firewalls (WAFs) with rules to detect and block suspicious serialized payloads can provide temporary protection. Conduct thorough input validation and sanitization on all data entering the system, especially serialized objects. Restrict access to WordPress admin interfaces and limit exposure of the plugin endpoints to trusted IP addresses where feasible. Regularly audit and monitor logs for unusual activity indicative of exploitation attempts. Employ network segmentation to isolate WordPress servers from critical internal systems to reduce lateral movement risk. Finally, ensure comprehensive backups are in place to enable recovery in case of compromise.