CVE-2026-3426 Overview
CVE-2026-3426 affects the RTMKit Addons for Elementor plugin for WordPress. The plugin contains missing capability checks on the save_widget() and reset_all_widgets() functions in all versions up to and including 2.0.2. Authenticated attackers with Author-level access or above can modify or reset site-wide widget configurations without authorization. The vulnerability is classified under CWE-862: Missing Authorization. It impacts data integrity across the affected WordPress site.
Critical Impact
Authenticated users with Author-level privileges can modify or reset widget configurations site-wide, affecting integrity of front-end content for all visitors.
Affected Products
- RTMKit Addons for Elementor (rometheme-for-elementor) plugin for WordPress
- All versions up to and including 2.0.2
- WordPress sites running the affected plugin with Author-level or higher user accounts
Discovery Timeline
- 2026-05-13 - CVE-2026-3426 published to NVD
- 2026-05-13 - Last updated in NVD database
Technical Details for CVE-2026-3426
Vulnerability Analysis
The RTMKit Addons for Elementor plugin exposes two functions, save_widget() and reset_all_widgets(), that handle widget storage operations. These functions execute privileged actions on plugin-managed widget configuration data. The plugin registers these handlers without verifying that the calling user has appropriate WordPress capabilities to modify site-wide widget state.
Any authenticated user with Author-level access or higher can invoke these handlers. The functions then write to or reset the widget storage backing the plugin's editor canvas. The result is unauthorized modification of data that should be restricted to administrators or editors.
Root Cause
The root cause is a missing authorization check [CWE-862]. The vulnerable handlers in WidgetStorage.php and EditorCanvas.php lack a current_user_can() capability assertion before executing state-changing operations. Authentication alone gates access, while the function logic assumes the caller is privileged.
Attack Vector
An attacker first obtains Author-level credentials on the target WordPress site. The attacker then sends an authenticated request to the plugin's widget endpoints that map to save_widget() or reset_all_widgets(). Because no capability check executes, the request succeeds and overwrites or resets widget data used across the site. The change persists and affects rendered output for all visitors.
For implementation specifics, see the vulnerable EditorCanvas.php helper, the WidgetStorage.php save handler, and the reset handler reference.
Detection Methods for CVE-2026-3426
Indicators of Compromise
- Unexpected modifications to Elementor widget configurations or layout resets that do not align with administrator activity logs.
- WordPress audit log entries showing AJAX or REST requests to RTMKit widget save or reset endpoints originating from Author-level accounts.
- Unexplained changes to site-wide front-end rendering tied to the rometheme-for-elementor plugin.
Detection Strategies
- Review WordPress access logs for POST requests targeting RTMKit handler endpoints invoked by non-administrator users.
- Compare current widget storage data against backups or version control to identify unauthorized modifications.
- Enable a WordPress activity monitoring plugin to record plugin option changes and user-attributed actions.
Monitoring Recommendations
- Alert on writes to plugin-managed widget storage by accounts below Editor or Administrator role.
- Track plugin version inventory and flag WordPress sites still running rometheme-for-elementor 2.0.2 or earlier.
- Monitor creation of new Author-level accounts and correlate with subsequent plugin endpoint activity.
How to Mitigate CVE-2026-3426
Immediate Actions Required
- Update RTMKit Addons for Elementor to the patched release that follows version 2.0.2 as published in the plugin repository.
- Audit existing user accounts and remove or downgrade Author-level accounts that are not required.
- Restore widget configurations from a known-good backup if unauthorized modifications are detected.
Patch Information
The vendor addressed the missing capability checks in WordPress Plugin Changeset #3474369. Additional context is available in the Wordfence Vulnerability Report. Site administrators should upgrade to the fixed release referenced in those advisories.
Workarounds
- Deactivate the RTMKit Addons for Elementor plugin until the patched version is installed.
- Restrict Author-level access on WordPress sites where the plugin must remain active, limiting accounts to trusted users only.
- Apply a web application firewall rule to block unauthenticated and low-privileged requests to the plugin's widget save and reset endpoints.
# Configuration example
# Update the plugin via WP-CLI to the patched version
wp plugin update rometheme-for-elementor
# Audit Author-level and above accounts
wp user list --role=author --fields=ID,user_login,user_email,user_registered
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
