CVE-2025-10051: Demo Import Kit WordPress RCE Vulnerability

CVE-2025-10051 Overview

CVE-2025-10051 is an arbitrary file upload vulnerability affecting the Demo Import Kit plugin for WordPress in all versions up to and including 1.1.0. The flaw stems from missing file type validation in the plugin's import functionality [CWE-434]. Authenticated attackers with Administrator-level access or higher can upload arbitrary files to the affected site's server. Successful exploitation may lead to remote code execution on the underlying host.

Critical Impact
Authenticated administrators can upload arbitrary files via the plugin's import feature, enabling potential remote code execution and full site compromise.

Affected Products

WordPress Demo Import Kit plugin versions ≤ 1.1.0
WordPress sites with the plugin installed and active
Any hosting environment running the vulnerable plugin

Discovery Timeline

2025-10-15 - CVE-2025-10051 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-10051

Vulnerability Analysis

The Demo Import Kit plugin exposes an import function that accepts file uploads without validating the file type or extension. The plugin processes uploaded files as part of its demo content import workflow. Because no allowlist or MIME validation is enforced, an attacker can upload executable PHP files alongside the expected demo assets.

Once a PHP file lands in a web-accessible directory, the attacker can request it directly to trigger execution under the web server's process context. This converts the file upload weakness into remote code execution against the WordPress host. The vulnerability requires Administrator-level privileges, which limits casual exploitation but remains relevant in scenarios involving credential theft, privilege escalation chains, or compromised administrator accounts.

Root Cause

The root cause is missing file type validation [CWE-434: Unrestricted Upload of File with Dangerous Type] in the plugin's import handler. The code does not verify file extensions, MIME types, or magic bytes before writing uploaded content to disk.

Attack Vector

The attack vector is network-based and requires an authenticated session with Administrator privileges. An attacker submits a crafted import request containing a malicious file, such as a PHP webshell. The plugin writes the file to the WordPress uploads directory. The attacker then requests the uploaded file over HTTP to execute arbitrary code on the server.

No verified proof-of-concept code is publicly available. See the Wordfence Vulnerability Analysis for additional technical context.

Detection Methods for CVE-2025-10051

Indicators of Compromise

Unexpected .php, .phtml, or .phar files within the wp-content/uploads/ directory tree
New or modified files created by the web server user immediately following an administrator login
Outbound network connections originating from PHP worker processes to unfamiliar hosts
Web server access logs showing GET requests to recently uploaded files under the uploads path

Detection Strategies

Monitor file integrity across the WordPress installation, particularly the wp-content/uploads/ directory
Inspect HTTP POST requests to the Demo Import Kit plugin's import endpoint for non-archive payloads
Correlate administrator authentication events with subsequent file write operations on the web root
Scan installed plugins for the Demo Import Kit at versions ≤ 1.1.0

Monitoring Recommendations

Enable WordPress audit logging for plugin import actions and administrator activity
Alert on any executable file types written to upload directories that should contain only media
Review web server logs for suspicious user-agent strings and one-off requests to recently created files
Track process execution under the web server account for indicators of webshell activity

How to Mitigate CVE-2025-10051

Immediate Actions Required

Disable or remove the Demo Import Kit plugin until a patched version is verified
Audit all administrator accounts and enforce multi-factor authentication
Review the wp-content/uploads/ directory and remove unauthorized executable files
Rotate WordPress administrator credentials and any API keys exposed through the site

Patch Information

At the time of NVD publication, all versions up to and including 1.1.0 are affected. Site operators should consult the WordPress plugin page for updates and apply any release that addresses the file validation issue. Until a fix is confirmed, removal of the plugin is the safer option.

Workarounds

Restrict Administrator role assignment to the minimum necessary accounts
Configure the web server to deny PHP execution within the wp-content/uploads/ directory
Place the WordPress site behind a web application firewall with file upload inspection rules
Enforce strict file extension allowlists at the upload directory level using server configuration

bash

# Apache: block PHP execution in the uploads directory
# Place this in wp-content/uploads/.htaccess
<FilesMatch "\.(php|phtml|phar|php7|php8)$">
    Require all denied
</FilesMatch>

# Nginx equivalent inside the server block
location ~* /wp-content/uploads/.*\.(php|phtml|phar)$ {
    deny all;
    return 403;
}