CVE-2026-25447: Widget Wrangler RCE Vulnerability

CVE-2026-25447 Overview

CVE-2026-25447 is a critical Code Injection vulnerability affecting the Widget Wrangler plugin for WordPress, developed by Jonathan Daggerhart. This vulnerability allows attackers to inject and execute arbitrary code on affected WordPress installations, potentially leading to complete site compromise. The flaw is classified under CWE-94 (Improper Control of Generation of Code) and affects all versions of Widget Wrangler through version 2.3.9.

Critical Impact

Successful exploitation enables remote code execution on vulnerable WordPress sites, allowing attackers with high-privileged access to execute arbitrary commands, compromise site integrity, access sensitive data, and potentially pivot to attack the underlying server infrastructure.

Affected Products

• Widget Wrangler WordPress Plugin versions up to and including 2.3.9
• WordPress installations running vulnerable Widget Wrangler versions
• Web servers hosting affected WordPress instances

Discovery Timeline

• 2026-03-25 - CVE-2026-25447 published to NVD
• 2026-03-25 - Last updated in NVD database

Technical Details for CVE-2026-25447

Vulnerability Analysis

This vulnerability stems from improper control of code generation within the Widget Wrangler plugin. The plugin fails to adequately sanitize or validate user-supplied input before incorporating it into dynamically generated code, creating a code injection vector. Due to the scope change indicator in the vulnerability metrics, successful exploitation can impact resources beyond the vulnerable component itself, potentially affecting the entire WordPress installation and underlying server.

The vulnerability requires high privileges to exploit but does not require user interaction, making it particularly dangerous in scenarios where an attacker has already obtained administrative or elevated credentials through other means such as credential stuffing, phishing, or exploitation of other vulnerabilities.

Root Cause

The root cause is classified as CWE-94: Improper Control of Generation of Code ('Code Injection'). The Widget Wrangler plugin dynamically generates and executes code without properly validating or sanitizing input parameters. This allows malicious actors to inject arbitrary code that gets executed within the context of the WordPress application, bypassing intended security controls.

Attack Vector

The attack is network-accessible and exploitable remotely, though it requires the attacker to have high-level privileges on the WordPress installation. Once authenticated with sufficient privileges, the attacker can craft malicious input that, when processed by the vulnerable code generation functionality, results in the execution of arbitrary code on the server.

The exploitation mechanism involves injecting malicious code through plugin functionality that handles widget configuration or content generation. Since no user interaction is required once the attacker has authenticated, the attack can be automated and executed rapidly.

Detection Methods for CVE-2026-25447

Indicators of Compromise

• Unexpected PHP files or modified plugin files in the wp-content/plugins/widget-wrangler/ directory
• Suspicious code patterns or obfuscated PHP in widget configurations stored in the database
• Unusual outbound network connections from the web server
• Web server logs showing POST requests with encoded or suspicious payloads to Widget Wrangler endpoints

Detection Strategies

• Review WordPress audit logs for unusual administrative actions related to widget configuration
• Monitor file integrity of the Widget Wrangler plugin directory using file integrity monitoring solutions
• Implement Web Application Firewall (WAF) rules to detect code injection patterns in requests to WordPress
• Scan database tables associated with Widget Wrangler for unexpected or obfuscated content

Monitoring Recommendations

• Enable and review WordPress debug logging for unexpected code execution errors
• Configure server-side logging to capture all requests to plugin administrative endpoints
• Implement real-time alerting for new file creation or modification within the WordPress plugins directory
• Monitor server resource usage for anomalies that may indicate unauthorized code execution

How to Mitigate CVE-2026-25447

Immediate Actions Required

• Audit all administrator and editor accounts for unauthorized access or suspicious activity
• Temporarily disable the Widget Wrangler plugin until a patched version is available
• Review recent changes to widget configurations for signs of injection attempts
• Implement additional access controls to limit who can modify widget settings

Patch Information

At the time of publication, all versions of Widget Wrangler through 2.3.9 are affected. Site administrators should monitor the Patchstack WordPress Vulnerability Database and the official WordPress plugin repository for security updates. Until a patch is available, consider disabling the plugin or implementing compensating controls.

Workarounds

• Disable the Widget Wrangler plugin entirely if its functionality is not critical to site operations
• Restrict administrative access to the WordPress backend to trusted IP addresses only
• Implement multi-factor authentication for all WordPress administrator accounts
• Deploy a Web Application Firewall with rules to block code injection attempts targeting WordPress plugins

# Configuration example - Restrict WordPress admin access by IP in .htaccess
# Place in wp-admin directory or add to existing .htaccess

<IfModule mod_rewrite.c>
  RewriteEngine On
  RewriteCond %{REMOTE_ADDR} !^192\.168\.1\.100$
  RewriteCond %{REQUEST_URI} ^/wp-admin
  RewriteRule ^(.*)$ - [F,L]
</IfModule>

# Alternative: Disable plugin via wp-cli until patch is available
# wp plugin deactivate widget-wrangler