CVE-2025-14800 is a vulnerability classified under CWE-434 (Unrestricted Upload of File with Dangerous Type) affecting the themeisle Redirection for Contact Form 7 plugin for WordPress. The vulnerability arises from the 'move_file_to_upload' function lacking proper file type validation, allowing unauthenticated attackers to upload arbitrary files to the server hosting the WordPress site. This flaw affects all versions up to and including 3.2.7. The absence of validation means attackers can upload potentially malicious files, including web shells or scripts, which can be executed on the server. If the PHP configuration directive 'allow_url_fopen' is enabled, attackers can upload remote files directly, increasing the attack surface. The vulnerability can be exploited remotely over the network without requiring authentication or user interaction, making it highly dangerous. The impact includes full compromise of the server's confidentiality, integrity, and availability, as attackers can execute arbitrary code, deface websites, or disrupt services. Although no exploits are currently known in the wild, the high CVSS score of 8.1 indicates a critical risk. The vulnerability was published on December 21, 2025, and no patches or updates are currently listed, emphasizing the need for immediate attention. The plugin is widely used in WordPress environments, which are prevalent in European organizations for web presence and customer interaction.

The vulnerability allows attackers to upload arbitrary files, potentially leading to remote code execution, data theft, website defacement, or denial of service. For European organizations, this can result in significant operational disruption, reputational damage, and regulatory non-compliance, especially under GDPR if personal data is compromised. Public-facing WordPress sites using the affected plugin are particularly vulnerable, as attackers do not need authentication or user interaction to exploit the flaw. The ability to upload remote files if 'allow_url_fopen' is enabled further exacerbates the risk, allowing attackers to bypass local file restrictions. This can lead to widespread compromise of web servers, impacting business continuity and customer trust. The high CVSS score reflects the severity and ease of exploitation, making it a critical threat for organizations relying on this plugin for form redirection and management.

1. Immediately monitor for plugin updates from themeisle and apply patches as soon as they are released. 2. Temporarily disable or remove the Redirection for Contact Form 7 plugin if patching is not immediately possible. 3. Disable the PHP 'allow_url_fopen' directive in the server configuration to prevent remote file uploads. 4. Implement strict file upload validation and filtering at the web server or application firewall level to block dangerous file types. 5. Conduct regular security audits and file integrity monitoring to detect unauthorized file uploads. 6. Restrict permissions on upload directories to prevent execution of uploaded files. 7. Use Web Application Firewalls (WAFs) with rules targeting file upload anomalies related to this plugin. 8. Educate site administrators on secure plugin management and the risks of outdated components. 9. Employ network segmentation to limit the impact of a compromised web server. 10. Maintain regular backups of website data and configurations to enable rapid recovery.