CVE-2026-5162: Royal Addons for Elementor XSS Vulnerability

CVE-2026-5162 Overview

The Royal Addons for Elementor plugin for WordPress contains a Stored Cross-Site Scripting (XSS) vulnerability in the Instagram Feed widget's instagram_follow_text setting. This vulnerability affects all versions up to and including 1.7.1056 and exists due to insufficient input sanitization and output escaping. Authenticated attackers with Contributor-level access or above can inject arbitrary web scripts into pages that execute whenever a user accesses an injected page.

Critical Impact

Authenticated attackers can persistently inject malicious JavaScript code that executes in the browsers of all users visiting affected pages, potentially leading to session hijacking, credential theft, or further site compromise.

Affected Products

• Royal Addons for Elementor plugin for WordPress versions up to and including 1.7.1056
• WordPress sites utilizing the Instagram Feed widget functionality
• Sites allowing Contributor-level or above user access to the Elementor editor

Discovery Timeline

• April 17, 2026 - CVE-2026-5162 published to NVD
• April 22, 2026 - Last updated in NVD database

Technical Details for CVE-2026-5162

Vulnerability Analysis

This vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation), commonly known as Cross-Site Scripting. The flaw resides in the Instagram Feed widget component of the Royal Addons for Elementor plugin. When users with Contributor-level privileges or higher configure the widget's instagram_follow_text setting, the plugin fails to properly sanitize the input before storing it in the database and does not adequately escape the output when rendering the content on the front end.

The vulnerability is particularly concerning because Stored XSS attacks persist across multiple page loads and can affect any visitor to the compromised page. Unlike reflected XSS, the malicious payload is stored server-side and delivered to victims automatically without requiring social engineering to click a malicious link.

Root Cause

The root cause is insufficient input sanitization and output escaping in the Instagram Feed widget's handling of the instagram_follow_text parameter. The vulnerable code paths can be found at multiple locations in the wpr-instagram-feed.php file, specifically around lines 5334, 5528, and 5623. The plugin accepts user-supplied input without properly filtering dangerous HTML and JavaScript elements, and subsequently renders this content without appropriate output encoding, creating the conditions for script injection.

Attack Vector

The attack vector is network-based and requires the attacker to have authenticated access to WordPress with at least Contributor-level privileges. An attacker would navigate to the Elementor editor, add or modify an Instagram Feed widget, and inject malicious JavaScript code into the instagram_follow_text setting. When the page containing the compromised widget is viewed by any user, the injected script executes in the context of the victim's browser session.

The injected scripts can perform actions such as stealing session cookies, redirecting users to malicious sites, defacing page content, or performing actions on behalf of the victim within the WordPress admin panel if they have elevated privileges.

Detection Methods for CVE-2026-5162

Indicators of Compromise

• Unexpected JavaScript or HTML tags present in Instagram Feed widget instagram_follow_text settings
• Unusual <script> tags, event handlers (e.g., onerror, onload), or encoded JavaScript in widget configurations
• Reports of unexpected browser behavior or redirects when viewing pages with Instagram Feed widgets
• Audit logs showing Contributor-level users modifying Instagram Feed widget settings unexpectedly

Detection Strategies

• Implement Web Application Firewalls (WAF) with rules to detect XSS payloads in POST requests to WordPress admin endpoints
• Enable WordPress activity logging to track all widget configuration changes, particularly by Contributor-level accounts
• Perform regular security scans of page content for suspicious script elements or encoded payloads
• Monitor for anomalous login activity from Contributor accounts that may indicate compromised credentials

Monitoring Recommendations

• Deploy browser-based Content Security Policy (CSP) headers to restrict inline script execution and alert on violations
• Configure SIEM rules to correlate widget modification events with subsequent unusual page access patterns
• Establish baseline behavior for Contributor accounts and alert on deviations such as bulk widget modifications
• Implement real-time monitoring of front-end JavaScript errors that may indicate injected script failures

How to Mitigate CVE-2026-5162

Immediate Actions Required

• Update the Royal Addons for Elementor plugin to a patched version beyond 1.7.1056 immediately
• Review all existing Instagram Feed widgets for suspicious content in the instagram_follow_text field
• Audit Contributor-level and above user accounts for unauthorized access or suspicious activity
• Consider temporarily disabling the Instagram Feed widget functionality until the patch is applied

Patch Information

The vulnerability has been addressed in the WordPress Change Set 3503219. Site administrators should update to the latest version of the Royal Addons for Elementor plugin through the WordPress plugin repository. Additional technical analysis is available via Wordfence Vulnerability Analysis.

Workarounds

• Restrict Contributor-level user access to trusted individuals only until the patch is applied
• Implement additional input validation at the server level using security plugins such as Wordfence or Sucuri
• Deploy Content Security Policy headers to mitigate the impact of any successful XSS exploitation
• Temporarily remove or disable the Instagram Feed widget from affected pages until updating is possible

# Example: Add Content Security Policy header in .htaccess as temporary mitigation
# Add the following to your WordPress .htaccess file
<IfModule mod_headers.c>
    Header set Content-Security-Policy "script-src 'self'; object-src 'none';"
</IfModule>