CVE-2025-11889 is a vulnerability classified under CWE-434 (Unrestricted Upload of File with Dangerous Type) found in the AIO Forms – Craft Complex Forms Easily WordPress plugin developed by edgarrojas. The vulnerability exists in the import functionality of the plugin, which lacks proper validation of file types during upload. This flaw affects all versions up to and including 1.3.15. An attacker with Administrator-level privileges on a WordPress site can exploit this vulnerability to upload arbitrary files to the server. Because the plugin does not restrict or validate the file types, malicious files such as web shells or scripts can be uploaded, potentially leading to remote code execution (RCE). The CVSS 3.1 base score of 7.2 reflects the high impact on confidentiality, integrity, and availability, with network attack vector, low attack complexity, and no user interaction required. Although exploitation requires high privileges, the risk remains significant because administrators typically have broad access. No public exploits have been reported yet, but the vulnerability's nature makes it a critical concern for WordPress sites using this plugin. The lack of patch links indicates that a fix may not yet be available, emphasizing the need for immediate attention from site administrators. This vulnerability could be leveraged to compromise entire web servers, steal sensitive data, deface websites, or launch further attacks within the network.

For European organizations, the impact of CVE-2025-11889 can be severe. Many European businesses and institutions rely on WordPress for their web presence, including e-commerce, government portals, and corporate websites. Successful exploitation could lead to unauthorized access to sensitive personal data protected under GDPR, resulting in legal and financial penalties. Remote code execution could allow attackers to implant malware, disrupt services, or pivot to internal networks, causing operational downtime and reputational damage. Organizations in sectors such as finance, healthcare, and public administration are particularly at risk due to the sensitivity of their data and the critical nature of their services. The requirement for administrator-level access means insider threats or compromised admin accounts are the primary attack vectors, highlighting the importance of strong access controls. The absence of known exploits in the wild provides a window for mitigation, but the high severity score and potential impact necessitate urgent action to prevent exploitation.

1. Monitor for official patches or updates from the plugin developer and apply them immediately once available. 2. Until a patch is released, restrict Administrator-level access strictly to trusted personnel and enforce strong authentication mechanisms such as multi-factor authentication (MFA). 3. Implement additional server-side file upload validation and filtering to block dangerous file types, especially in the plugin's import directory. 4. Use web application firewalls (WAFs) to detect and block suspicious file upload attempts or unusual administrator activities. 5. Regularly audit WordPress user accounts and permissions to ensure no unauthorized privilege escalation has occurred. 6. Conduct routine security scans and monitoring for web shells or anomalous files on the server. 7. Consider isolating WordPress instances in segmented network zones to limit lateral movement in case of compromise. 8. Educate administrators about the risks of arbitrary file uploads and the importance of cautious plugin management. 9. Backup website data and configurations frequently to enable quick restoration if an incident occurs. 10. Review and harden WordPress security settings and plugin usage policies to minimize attack surface.