CVE-2025-7340 is a critical vulnerability affecting the HT Contact Form Widget for Elementor Page Builder & Gutenberg Blocks & Form Builder WordPress plugin, versions up to and including 2.2.1. The vulnerability arises from improper validation of uploaded file types in the temp_file_upload function, classified under CWE-434 (Unrestricted Upload of File with Dangerous Type). This flaw allows unauthenticated attackers to upload arbitrary files, including potentially malicious scripts, to the affected web server. Because the plugin is commonly used to create contact forms on WordPress sites, the attack surface is significant. Successful exploitation can lead to remote code execution (RCE), enabling attackers to execute arbitrary commands on the server, compromise the website, steal sensitive data, or pivot to other internal systems. The CVSS v3.1 base score of 9.8 reflects the high severity, with attack vector being network-based, no privileges or user interaction required, and full impact on confidentiality, integrity, and availability. No patches or fixes are currently published, increasing the urgency for mitigation. Although no known exploits are reported in the wild yet, the ease of exploitation and critical impact make this a high-risk vulnerability for WordPress sites using this plugin.

For European organizations, this vulnerability poses a significant risk, especially for those relying on WordPress websites for customer interaction, e-commerce, or internal communications. Exploitation could lead to unauthorized access to sensitive personal data protected under GDPR, resulting in regulatory penalties and reputational damage. The ability to execute remote code could allow attackers to deface websites, disrupt services, or use compromised servers as a foothold for further attacks within corporate networks. Small and medium enterprises (SMEs) that often use popular WordPress plugins without extensive security oversight are particularly vulnerable. Additionally, public sector websites and critical infrastructure entities using WordPress could face service outages or data breaches, impacting public trust and operational continuity. The lack of authentication and user interaction requirements means attackers can exploit this vulnerability remotely and anonymously, increasing the threat level.

Immediate mitigation steps include disabling or removing the HT Contact Form Widget plugin until a security patch is released. Organizations should monitor official vendor channels and security advisories for updates or patches. Implementing a Web Application Firewall (WAF) with rules to block suspicious file uploads or restrict upload file types can reduce risk. Restricting file upload directories with strict permissions and disabling execution of uploaded files (e.g., via .htaccess or server configuration) can limit exploitation impact. Regularly auditing WordPress plugins and themes for vulnerabilities and minimizing the use of unnecessary plugins reduces attack surface. Organizations should also ensure their WordPress core and other plugins are up to date and conduct penetration testing focused on file upload functionalities. Logging and monitoring upload activity for anomalies can help detect exploitation attempts early.