CVE-2025-14632 is a vulnerability classified under CWE-434 (Unrestricted Upload of File with Dangerous Type) found in the wpchill Filr – Secure document library WordPress plugin. This plugin is designed to manage secure document libraries within WordPress sites. The vulnerability exists in all versions up to and including 1.2.11 due to insufficient validation and restriction on file types uploaded via the FILR_Uploader class. Authenticated attackers with Administrator-level privileges or higher can exploit this flaw by uploading malicious HTML files containing embedded JavaScript. These files are stored on the server and executed in the context of the WordPress site when accessed by users with permissions to create or edit posts of the 'filr' post type. This results in a stored cross-site scripting (XSS) attack, which can lead to session hijacking, privilege escalation, or data theft. The attack vector requires network access (remote) and high privileges but does not require user interaction beyond accessing the malicious file. The CVSS v3.1 score is 4.4 (medium), reflecting the need for high privileges and the limited impact on availability but acknowledging the potential confidentiality and integrity impacts. No patches or known exploits are currently available, but the vulnerability is publicly disclosed and should be addressed promptly.

For European organizations, the impact of this vulnerability can be significant, particularly for those relying on the wpchill Filr plugin for secure document management. Exploitation could lead to unauthorized execution of malicious scripts, resulting in data leakage, session hijacking, or unauthorized actions performed on behalf of legitimate users. This is especially critical in sectors handling sensitive or regulated data such as government agencies, financial institutions, healthcare providers, and educational institutions. The stored XSS can undermine user trust and lead to compliance violations under GDPR if personal data is exposed or manipulated. Since the vulnerability requires administrator-level access, the primary risk lies in insider threats or compromised administrator accounts. However, once exploited, the attacker can affect multiple users and potentially pivot to other parts of the network, increasing the scope of impact. The lack of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, especially as attackers often weaponize such vulnerabilities post-disclosure.

1. Immediately restrict access to the Filr plugin to only the minimum necessary administrators and users with 'filr' post type permissions. 2. Implement strict monitoring and logging of file uploads within the WordPress environment, focusing on file types and upload sources. 3. Use Web Application Firewalls (WAFs) with rules to detect and block suspicious HTML or script uploads targeting the Filr plugin directories. 4. Educate administrators about the risks of uploading untrusted files and enforce strong authentication mechanisms (e.g., MFA) to reduce the risk of compromised admin accounts. 5. Regularly audit user permissions to ensure only trusted personnel have high-level access. 6. Monitor official wpchill channels and WordPress plugin repositories for patches or updates addressing this vulnerability and apply them promptly. 7. Consider isolating or sandboxing document libraries to limit the impact of potential XSS payloads. 8. Employ Content Security Policy (CSP) headers to restrict script execution from untrusted sources within the WordPress site. 9. Conduct periodic security assessments and penetration testing focusing on file upload functionalities.