How to fix CVE-2025-4392?

Within 24 hours: audit all HTML files uploaded via this plugin and disable the file upload feature if not business-critical. Within 7 days: inventory all affected WordPress instances and implement WAF rules to block suspicious HTML uploads; contact the plugin vendor for patch timelines. Within 30 days: either apply the vendor patch when available, migrate to an alternative plugin, or implement input validation and output escaping at the application or network level.

Is PHP affected by CVE-2025-4392?

WordPress installations using the Shared Files plugin (versions up to 1.7.48) are vulnerable to stored cross-site scripting attacks that allow unauthenticated attackers to inject malicious scripts through HTML file uploads.

CVE-2025-4392

EUVD-2025-16717 HIGH

2025-06-03 [email protected]

WordPress XSS PHP

7.2

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 14, 2026 - 17:04 vuln.today

EUVD ID Assigned

Mar 14, 2026 - 17:04 euvd

EUVD-2025-16717

CVE Published

Jun 03, 2025 - 10:15 nvd

HIGH 7.2

DescriptionNVD

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.

AnalysisAI

A cross-site scripting vulnerability in Secure File Sharing (CVSS 7.2). High severity vulnerability requiring prompt remediation.

Technical ContextAI

CWE-79 (Cross-site Scripting). CVSS 7.2 indicates high severity. Affects Secure File Sharing.

RemediationAI

Monitor vendor channels for patch availability.

CVE-2025-4392 vulnerability details – vuln.today

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CVE-2025-4392

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code