CVE-2025-6327 is a critical security vulnerability found in the King Addons for Elementor plugin developed by KingAddons.com. This plugin is widely used to extend the functionality of Elementor, a popular WordPress page builder. The vulnerability allows an attacker to perform an unrestricted upload of files with dangerous types, including web shells, directly to the web server hosting the WordPress site. This occurs because the plugin fails to properly validate or restrict the types of files that can be uploaded through its interface. As a result, an attacker can upload malicious scripts disguised as legitimate files, which can then be executed on the server. This leads to remote code execution (RCE), enabling attackers to take full control over the affected web server, manipulate website content, steal sensitive data, or pivot to other internal systems. The vulnerability affects all versions of King Addons for Elementor up to and including version 51.1.36. No authentication or user interaction is required to exploit this flaw, which significantly increases the risk. Although no known exploits are currently in the wild, the vulnerability is publicly disclosed and thus may attract attackers. The lack of an official patch or mitigation guidance at the time of disclosure further elevates the threat. The vulnerability was reserved in June 2025 and published in November 2025, indicating recent discovery and disclosure. Given the widespread use of Elementor and its add-ons in WordPress sites globally, this vulnerability poses a substantial risk to websites relying on this plugin for enhanced functionality.

For European organizations, the impact of CVE-2025-6327 can be severe. Organizations using WordPress sites with King Addons for Elementor are at risk of having their web servers compromised through remote code execution. This can lead to unauthorized access to sensitive customer and business data, defacement or disruption of websites, and potential lateral movement within corporate networks. The confidentiality, integrity, and availability of affected systems are all at risk. Given the critical role many European businesses place on their online presence for e-commerce, communications, and services, exploitation could result in financial losses, reputational damage, regulatory penalties (especially under GDPR), and operational disruptions. The ease of exploitation without authentication or user interaction increases the likelihood of attacks, including automated mass scanning and exploitation attempts. Additionally, compromised web servers could be used as launchpads for further attacks or to distribute malware, amplifying the threat landscape for European entities.

To mitigate this vulnerability, European organizations should take immediate and specific actions beyond generic advice: 1) Monitor official KingAddons.com channels and Patchstack for the release of a security patch and apply it promptly. 2) Until a patch is available, disable or remove the King Addons for Elementor plugin from all WordPress installations to eliminate the attack vector. 3) Implement strict file upload restrictions at the web server and application level, allowing only safe file types and scanning uploaded files for malicious content. 4) Deploy and configure a Web Application Firewall (WAF) with rules to detect and block attempts to upload web shells or suspicious files. 5) Conduct thorough security audits and integrity checks on existing WordPress sites to detect any signs of compromise or unauthorized file uploads. 6) Harden WordPress installations by limiting user permissions, disabling unnecessary features, and ensuring all other plugins and themes are up to date. 7) Increase monitoring and alerting for unusual web server activity, including unexpected file changes or execution of scripts in upload directories. 8) Educate site administrators on the risks of plugin vulnerabilities and the importance of timely updates and security best practices.