CVE-2025-4392

The Shared Files – Frontend File Upload Form & Secure File Sharing plugin for WordPress is vulnerable to Stored Cross-Site Scripting via html File uploads in all versions up to, and including, 1.7.48 due to insufficient input sanitization and output escaping within the sanitize_file() function. This makes it possible for unauthenticated attackers to bypass the plugin’s MIME-only checks and inject arbitrary web scripts in pages that will execute whenever a user accesses the html file.

Score

CVSS 3.1 7.2 High

Status

Deferred - security@wordfence.com

Published

2025-06-03

Last modified

2026-04-08

Weaknesses

CWE-79

Affected products

• Shared Files Frontend File Upload Form Secure File Sharing (Anssilaitila)

References

• https://github.com/anssilaitila/shared-files/blob/master/admin/class-sf-admin-allow-more-file-types.php
• https://plugins.trac.wordpress.org/changeset/3304053/
• https://wordpress.org/plugins/shared-files/#developers
• https://www.wordfence.com/threat-intel/vulnerabilities/id/469a9c8a-0708-4c93-99d8-e9157a1f91f5?source=cve