CVE-2024-5630: Articulate Content Plugin RCE Vulnerability

CVE-2024-5630 Overview

CVE-2024-5630 is an arbitrary file upload vulnerability in the Insert or Embed Articulate Content into WordPress plugin. Versions before 4.3000000024 fail to restrict file types uploaded by authenticated authors. Attackers with author-level access can upload PHP shells to affected sites and achieve remote code execution. The flaw is categorized as [CWE-434] Unrestricted Upload of File with Dangerous Type. The vulnerability affects the elearningfreak/insert_or_embed_articulate_content plugin distributed through the WordPress plugin ecosystem.

Critical Impact
Authenticated authors can upload PHP shells and execute arbitrary code on the WordPress server, leading to full site compromise.

Affected Products

Elearningfreak Insert or Embed Articulate Content into WordPress plugin versions prior to 4.3000000024
WordPress sites permitting author-level user registration or access
Any WordPress installation with the vulnerable plugin activated

Discovery Timeline

2024-07-15 - CVE-2024-5630 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-5630

Vulnerability Analysis

The Insert or Embed Articulate Content plugin allows WordPress authors to upload Articulate e-learning packages to their sites. The upload handler accepts author-submitted files without validating the file type or extension. This gap enables uploading of executable PHP files disguised as content packages.

Once uploaded, PHP files land in a web-accessible directory under wp-content/uploads/. An attacker requests the uploaded file directly, causing the web server to execute the embedded PHP code. Successful exploitation yields code execution in the context of the web server user.

The vulnerability requires low privileges. Any account with the WordPress Author role can trigger it. Sites that allow open registration or user-generated content dramatically expand the attack surface.

Root Cause

The plugin's upload routine does not enforce an allowlist of permitted file extensions or MIME types. It also fails to validate archive contents before extraction. This missing input validation permits attackers to introduce .php files into the uploads directory alongside legitimate e-learning assets.

Attack Vector

An attacker first obtains or compromises an account with author privileges on the target WordPress site. The attacker then invokes the plugin's upload endpoint with a payload containing a PHP web shell. After the plugin stores the file, the attacker requests the shell URL to execute arbitrary commands on the underlying host.

Refer to the WPScan Vulnerability Report for technical details on the affected code paths.

Detection Methods for CVE-2024-5630

Indicators of Compromise

Presence of .php, .phtml, or .phar files within the wp-content/uploads/articulate_uploads/ directory or any Articulate content subdirectory
Unexpected outbound network connections originating from the PHP-FPM or Apache worker process on the WordPress host
New administrator accounts created shortly after author-role uploads
Modified WordPress core files or new plugins installed without administrator action

Detection Strategies

Scan the uploads directory for executable script extensions using file integrity monitoring tools
Review web server access logs for POST requests to plugin upload endpoints followed by GET requests to .php files under /wp-content/uploads/
Alert on WordPress user role escalations and unexpected plugin or theme installations

Monitoring Recommendations

Enable audit logging for all author, editor, and administrator actions through a WordPress activity log plugin
Monitor web server processes for unexpected child processes such as sh, bash, curl, or wget spawned from PHP
Forward WordPress and web server logs to a centralized SIEM for correlation with endpoint telemetry

How to Mitigate CVE-2024-5630

Immediate Actions Required

Update the Insert or Embed Articulate Content plugin to version 4.3000000024 or later immediately
Audit all existing author accounts and revoke access for accounts not actively required
Inspect the wp-content/uploads/ tree for unauthorized PHP files and remove any confirmed web shells
Rotate WordPress administrator credentials and database passwords if compromise is suspected

Patch Information

The plugin vendor released version 4.3000000024, which enforces file type validation on uploads. Site operators should install the update through the WordPress plugin management interface. Confirm the installed version matches or exceeds the fixed release before returning the site to normal operation.

Workarounds

Deactivate the Insert or Embed Articulate Content plugin until the patched version is installed
Configure the web server to deny PHP execution within the wp-content/uploads/ directory using directives in .htaccess or the equivalent Nginx location block
Restrict author-role assignments and disable open user registration on affected sites
Deploy a Web Application Firewall rule that blocks uploads containing PHP script signatures

bash

# Example Nginx configuration to block PHP execution in uploads
location ~* /wp-content/uploads/.*\.php$ {
    deny all;
    return 403;
}