CVE-2025-4392

Shared Files <= 1.7.48 - Unauthenticated Stored Cross-Site Scripting via sanitize_file Function

Description

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.

Category

7.2
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.08%
Affected: anssilaitila Shared Files – Frontend File Upload Form & Secure File Sharing
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2025-4392?
CVE-2025-4392 has been scored as a high severity vulnerability.
How to fix CVE-2025-4392?
To fix CVE-2025-4392, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-4392 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-4392 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-4392?
CVE-2025-4392 affects anssilaitila Shared Files – Frontend File Upload Form & Secure File Sharing.
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