CVE-2025-6423: BeeTeam368 Extensions WordPress RCE Flaw

CVE-2025-6423 Overview

CVE-2025-6423 is an arbitrary file upload vulnerability in the BeeTeam368 Extensions plugin for WordPress. The flaw affects all versions up to and including 2.3.5. It stems from missing file type validation in the handle_submit_upload_file() function [CWE-434]. Authenticated attackers with Subscriber-level access or higher can upload arbitrary files to the affected site's server. Successful exploitation can lead to remote code execution on the underlying host.

Critical Impact
Authenticated Subscriber-level users can upload arbitrary files, including PHP webshells, enabling remote code execution and full site compromise.

Affected Products

BeeTeam368 Extensions plugin for WordPress, all versions through 2.3.5
WordPress sites bundling the Vidmov video theme that ships this plugin
Any WordPress deployment where Subscriber registration is enabled and the plugin is active

Discovery Timeline

2025-07-12 - CVE-2025-6423 published to the National Vulnerability Database
2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-6423

Vulnerability Analysis

The BeeTeam368 Extensions plugin exposes an authenticated file upload endpoint handled by the handle_submit_upload_file() function. This function processes user-submitted files without validating the file type, extension, or MIME content. As a result, an attacker can submit a file with an executable extension such as .php and have it written to a web-accessible directory.

The issue maps to [CWE-434] Unrestricted Upload of File with Dangerous Type. Because the endpoint only requires Subscriber-level authentication, the access barrier is low on sites that permit open user registration. The combination of weak authorization and absent input validation converts a low-privileged account into a path to remote code execution.

Root Cause

The root cause is the absence of allowlist-based file type validation inside handle_submit_upload_file(). The function does not check the file extension against an allowed set, does not verify the MIME type from file content, and does not enforce server-side sanitization of the uploaded filename. Subscriber-level capability checks are insufficient to gate a sensitive file write operation.

Attack Vector

An attacker first registers or authenticates as a Subscriber-level user on the target WordPress site. The attacker then sends a crafted multipart POST request to the plugin's upload handler containing a malicious PHP file. The plugin writes the file to a predictable uploads location. The attacker then requests the uploaded file directly through the web server, triggering PHP execution and achieving code execution under the web server user. No verified public proof-of-concept is currently linked to this CVE, and exploitation has not been confirmed in the wild by CISA KEV.

Detection Methods for CVE-2025-6423

Indicators of Compromise

Unexpected .php, .phtml, or .phar files in the WordPress wp-content/uploads/ directory tree, particularly under BeeTeam368 plugin upload paths
POST requests to plugin upload endpoints from accounts with Subscriber role immediately followed by GET requests to newly created files
New WordPress user registrations from suspicious IPs followed by file upload activity within minutes
Web server processes spawning shell, wget, curl, or interpreter child processes from the WordPress document root

Detection Strategies

Monitor HTTP access logs for POST requests containing the handle_submit_upload_file action followed by access to uploaded files
Audit the wp-content/uploads/ directory for files with executable extensions using file integrity monitoring
Correlate WordPress audit logs of low-privilege user actions with file system changes on the web server

Monitoring Recommendations

Enable WordPress activity logging to track file upload events tied to user IDs and roles
Forward web server access logs and PHP error logs to a centralized SIEM for query and correlation
Alert on PHP processes initiating outbound network connections from the uploads directory
Track creation of new Subscriber accounts followed by immediate upload activity within the same session

How to Mitigate CVE-2025-6423

Immediate Actions Required

Update the BeeTeam368 Extensions plugin to a version later than 2.3.5 as soon as a patched release is available from the vendor
Disable the plugin if no fixed version is available and the upload functionality is not business-critical
Disable open user registration or restrict the default new user role to limit exposure to Subscriber-gated endpoints
Audit wp-content/uploads/ for unexpected executable files and remove any unauthorized artifacts

Patch Information

Review the ThemeForest Theme Change Log for the Vidmov theme that bundles this plugin and apply the latest update that addresses the file upload validation. Refer to the Wordfence Vulnerability Report for current fix status and detection signatures.

Workarounds

Configure the web server to deny PHP execution within wp-content/uploads/ using directory-level rules
Deploy a web application firewall rule that blocks uploads of files with executable extensions to the plugin endpoint
Restrict access to the plugin's upload action through server-side authentication enforcement until the patch is applied

bash

# Apache configuration to block PHP execution in WordPress uploads directory
<Directory "/var/www/html/wp-content/uploads">
    <FilesMatch "\.(php|phtml|phar|php3|php4|php5|php7|phps)$">
        Require all denied
    </FilesMatch>
    php_admin_flag engine off
</Directory>