CVE-2025-7697 is a critical vulnerability classified under CWE-502 (Deserialization of Untrusted Data) affecting the crmperks Integration plugin for Google Sheets and several widely used WordPress form plugins: Contact Form 7, WPForms, Elementor, and Ninja Forms. The vulnerability arises from unsafe deserialization in the verify_field_val() function, which processes untrusted input without proper validation or sanitization. This allows an unauthenticated attacker to inject crafted PHP objects, exploiting PHP Object Injection to manipulate application behavior. The presence of a gadget chain (POP chain) in the Contact Form 7 plugin enables attackers to leverage this injection to delete arbitrary files on the server, including critical configuration files like wp-config.php. Deletion of wp-config.php can lead to denial of service by breaking WordPress functionality or enable remote code execution if attackers can manipulate subsequent application behavior. The vulnerability affects all versions up to and including 1.1.1 of the crmperks Integration plugin. The CVSS v3.1 base score is 9.8, reflecting network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability. Although no known exploits are currently reported in the wild, the combination of unauthenticated remote code execution potential and the popularity of the affected plugins makes this a critical threat. The vulnerability is particularly dangerous because it chains with another plugin’s gadget chain, amplifying its impact. No official patches or mitigations are listed yet, increasing urgency for defensive measures.

The impact of CVE-2025-7697 is severe for organizations running WordPress sites with the affected crmperks Integration plugin and any of the associated form plugins. Successful exploitation can lead to complete compromise of the WordPress environment, including unauthorized deletion of critical files like wp-config.php, resulting in site downtime (denial of service) or enabling remote code execution. This can allow attackers to execute arbitrary code on the server, potentially leading to data breaches, website defacement, malware deployment, or pivoting to internal networks. The vulnerability requires no authentication or user interaction, making it highly exploitable remotely over the internet. Given the widespread use of Contact Form 7, WPForms, Elementor, and Ninja Forms, many websites globally are at risk, including e-commerce, corporate, and government sites. The loss of confidentiality, integrity, and availability could result in significant operational disruption, reputational damage, regulatory penalties, and financial losses.

1. Immediate action should be to update the crmperks Integration plugin to a patched version once available. Monitor vendor announcements for official patches. 2. Until patches are released, implement Web Application Firewall (WAF) rules to detect and block suspicious serialized PHP object payloads targeting the verify_field_val() function or related endpoints. 3. Restrict access to WordPress admin and plugin endpoints using IP whitelisting or VPNs to reduce exposure. 4. Disable or remove unused plugins, especially if Contact Form 7 or other affected plugins are not essential. 5. Harden file permissions on the WordPress installation to prevent unauthorized file deletions, particularly protecting wp-config.php and other critical files. 6. Monitor logs for unusual POST requests containing serialized data or unexpected file deletion attempts. 7. Employ runtime application self-protection (RASP) or endpoint detection and response (EDR) solutions to detect exploitation attempts. 8. Regularly back up WordPress files and databases to enable rapid recovery if compromise occurs. 9. Conduct security audits and penetration tests focusing on deserialization vulnerabilities and plugin security. These steps go beyond generic advice by focusing on interim protective controls and monitoring until official patches are available.