CVE-2025-67979 identifies a critical code injection vulnerability in the WesternDeal WPForms Google Sheet Connector plugin for WordPress, specifically affecting versions up to 4.0.1. The vulnerability arises from improper control over the generation of code within the plugin, allowing an attacker to inject malicious code that the system may execute. This type of vulnerability typically occurs when user-supplied input is incorporated into code generation or execution routines without adequate sanitization or validation, enabling attackers to execute arbitrary commands or scripts. The WPForms Google Sheet Connector plugin facilitates integration between WordPress forms and Google Sheets, commonly used to automate data collection workflows. Exploiting this vulnerability could allow an attacker to execute arbitrary code on the hosting server with the privileges of the web server process, potentially leading to data theft, website defacement, or further compromise of the underlying infrastructure. Although no known exploits have been reported in the wild, the nature of code injection vulnerabilities makes them attractive targets for attackers due to their potential for full system compromise. The vulnerability was reserved in December 2025 and published in February 2026, but no patch links are currently available, indicating that remediation may still be pending. The lack of a CVSS score necessitates an expert severity assessment based on the vulnerability's characteristics.

The impact of CVE-2025-67979 is significant for organizations using the affected WPForms Google Sheet Connector plugin. Successful exploitation can lead to arbitrary code execution on the web server, compromising the confidentiality, integrity, and availability of the affected systems. Attackers could steal sensitive data submitted via forms, manipulate or delete data in Google Sheets, or pivot to further internal network attacks. This could result in data breaches, loss of customer trust, service disruptions, and potential regulatory penalties. Since WordPress powers a large portion of websites globally, and WPForms is a popular form plugin, the scope of affected systems is broad. The ease of exploitation is elevated by the nature of code injection vulnerabilities, which often require minimal user interaction beyond submitting crafted input. The absence of authentication requirements (if the vulnerability is exploitable via public-facing forms) would further increase risk. Organizations relying on this plugin for critical business processes or handling sensitive data face heightened exposure to reputational and operational damage.

To mitigate CVE-2025-67979, organizations should take immediate steps beyond generic patching advice. First, monitor official WesternDeal and WPForms channels for the release of a security patch and apply it promptly. Until a patch is available, consider disabling or removing the WPForms Google Sheet Connector plugin to eliminate the attack surface. Implement strict input validation and sanitization on all form inputs, especially those integrated with the plugin, to prevent malicious code injection. Employ Web Application Firewalls (WAFs) with custom rules to detect and block suspicious payloads targeting the plugin endpoints. Conduct thorough security audits and code reviews of custom integrations involving the plugin. Monitor logs for unusual activity or errors related to the plugin’s operation. Limit the privileges of the web server process and Google Sheets API credentials to the minimum necessary to reduce potential damage from exploitation. Educate site administrators about the risks and signs of compromise related to this vulnerability. Finally, maintain regular backups of website data and Google Sheets to enable recovery in case of an incident.