CVE-2025-6327 is an unrestricted file upload vulnerability found in the King Addons for Elementor plugin developed by KingAddons.com. This plugin is widely used to extend the functionality of the Elementor page builder on WordPress websites. The vulnerability allows unauthenticated attackers to upload files of dangerous types, including web shells, directly to the web server without any restrictions or validation. This means an attacker can upload malicious scripts that provide remote code execution capabilities, effectively gaining full control over the affected server. The vulnerability affects all versions up to and including 51.1.36. The CVSS v3.1 base score is 10.0, indicating critical severity, with attack vector network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and scope changed (S:C). The impact on confidentiality, integrity, and availability is high, as attackers can execute arbitrary code, manipulate data, and disrupt services. Although no known exploits are currently reported in the wild, the nature of the vulnerability makes it a prime target for attackers seeking to compromise WordPress sites. The lack of patch links suggests that a fix may not yet be publicly available, increasing the urgency for monitoring and mitigation. This vulnerability is particularly dangerous because WordPress sites are common attack vectors, and plugins like King Addons are popular in the European market. Attackers exploiting this flaw can deploy web shells to maintain persistent access, steal sensitive data, or launch further attacks within the network.

For European organizations, the impact of CVE-2025-6327 can be severe. Many businesses, government agencies, and service providers rely on WordPress and Elementor with King Addons for their web presence. Successful exploitation can lead to complete server compromise, resulting in data breaches, defacement, ransomware deployment, or use of compromised servers as pivot points for lateral movement within corporate networks. This can cause significant financial losses, reputational damage, and regulatory penalties under GDPR due to unauthorized data access. The critical nature of the vulnerability means that even small or medium enterprises with limited cybersecurity resources are at risk. Additionally, public sector websites in Europe, which often use WordPress for content management, could be targeted for disruption or espionage. The lack of authentication and user interaction requirements lowers the barrier for attackers, increasing the likelihood of automated exploitation attempts. The potential for scope change means that the vulnerability could affect other components or services running on the same server, amplifying the damage.

1. Immediate monitoring for any suspicious file uploads or web shell indicators on servers running King Addons for Elementor. 2. Apply patches or updates from KingAddons.com as soon as they become available; if no official patch exists, consider disabling or removing the plugin temporarily. 3. Implement strict server-side validation to restrict allowed file types and enforce file size limits on uploads. 4. Use web application firewalls (WAFs) with rules to detect and block malicious upload attempts targeting this vulnerability. 5. Restrict file upload directories with proper permissions to prevent execution of uploaded files. 6. Conduct regular security audits and vulnerability scans focusing on WordPress plugins and themes. 7. Employ intrusion detection systems (IDS) to alert on anomalous activities related to file uploads. 8. Educate web administrators on the risks of unrestricted file uploads and best practices for plugin management. 9. Consider isolating web servers in segmented network zones to limit lateral movement if compromise occurs. 10. Backup website data and configurations regularly to enable rapid recovery in case of compromise.