CVE-2026-23543: Essential Addons Auth Bypass Vulnerability

CVE-2026-23543 Overview

A Missing Authorization vulnerability has been identified in WPDeveloper's Essential Addons for Elementor plugin (essential-addons-for-elementor-lite). This vulnerability allows attackers to exploit incorrectly configured access control security levels, potentially enabling unauthorized actions within WordPress sites using the affected plugin.

Critical Impact

Attackers can bypass authorization checks to perform unauthorized operations on WordPress sites running vulnerable versions of Essential Addons for Elementor, potentially compromising site integrity and user data.

Affected Products

• Essential Addons for Elementor versions through 6.5.5
• WordPress sites using the essential-addons-for-elementor-lite plugin

Discovery Timeline

• 2026-02-19 - CVE-2026-23543 published to NVD
• 2026-02-19 - Last updated in NVD database

Technical Details for CVE-2026-23543

Vulnerability Analysis

This vulnerability is classified as CWE-862 (Missing Authorization), a Broken Access Control issue that occurs when an application fails to perform adequate authorization checks before allowing access to protected functionality or resources. In the context of the Essential Addons for Elementor plugin, the vulnerability allows attackers to bypass intended access restrictions due to improperly configured security controls.

WordPress plugins that interact with page builders like Elementor often expose AJAX endpoints or REST API routes that should only be accessible to authenticated users with specific capabilities. When authorization checks are missing or improperly implemented, unauthenticated or low-privileged users may be able to invoke sensitive functionality that should be restricted to administrators or editors.

Root Cause

The root cause of this vulnerability lies in missing authorization verification within the Essential Addons for Elementor plugin. The affected code paths fail to properly validate whether the requesting user has sufficient privileges before executing protected operations. This typically occurs when developers rely solely on authentication (checking if a user is logged in) without also verifying authorization (checking if the user has the required role or capability to perform the action).

In WordPress plugin development, proper authorization requires using capability checks via functions like current_user_can() on all sensitive endpoints and actions. The absence of such checks allows unauthorized access to functionality that could modify site content, settings, or user data.

Attack Vector

An attacker can exploit this vulnerability by directly accessing unprotected endpoints or triggering actions that lack proper authorization controls. The exploitation typically involves:

1. Identifying exposed AJAX actions or REST API endpoints within the plugin
2. Crafting requests that bypass the missing authorization checks
3. Executing unauthorized operations such as modifying content, accessing restricted data, or altering plugin settings

Since the vulnerability involves missing authorization rather than authentication bypass, the attack may be possible by any user who can send requests to the WordPress site, including unauthenticated visitors depending on the specific functionality affected.

For detailed technical analysis, refer to the Patchstack Vulnerability Report.

Detection Methods for CVE-2026-23543

Indicators of Compromise

• Unusual modifications to Elementor page content or templates by unauthorized users
• Unexpected AJAX requests to Essential Addons endpoints from unauthenticated sources
• Log entries showing access to plugin functionality by users without appropriate WordPress capabilities
• Changes to plugin settings without corresponding administrative activity

Detection Strategies

• Monitor WordPress access logs for suspicious requests targeting Essential Addons for Elementor endpoints
• Review user activity logs for unauthorized content modifications or settings changes
• Implement Web Application Firewall (WAF) rules to detect and block exploitation attempts
• Conduct regular security audits of WordPress plugin configurations and access controls

Monitoring Recommendations

• Enable verbose logging for WordPress AJAX and REST API requests
• Set up alerts for failed authorization attempts in security plugins
• Monitor file integrity for unexpected changes to Elementor templates and plugin files
• Review WordPress user role assignments to identify privilege escalation attempts

How to Mitigate CVE-2026-23543

Immediate Actions Required

• Update Essential Addons for Elementor to the latest version that includes the security fix
• Review and audit any content or settings that may have been modified by unauthorized users
• Temporarily disable the plugin if an immediate update is not possible and the site is at risk
• Implement additional access controls via security plugins or WAF rules

Patch Information

WPDeveloper is expected to release a patched version addressing this broken access control vulnerability. Site administrators should monitor the WordPress plugin repository and the Patchstack Vulnerability Report for update announcements. Update to a version higher than 6.5.5 when available.

Workarounds

• Restrict access to WordPress admin functionality using IP-based access controls
• Implement a Web Application Firewall (WAF) with rules to block unauthorized AJAX requests
• Disable unnecessary Essential Addons widgets and features to reduce the attack surface
• Use WordPress security plugins to add additional capability checks and access logging

# WordPress CLI command to update the plugin when a patch is available
wp plugin update essential-addons-for-elementor-lite

# Verify current plugin version
wp plugin list --name=essential-addons-for-elementor-lite --fields=name,version,status