Elementor Website Builder – more than just a page builder <= 4.1.0 - Missing Authorization
Description
The Elementor Website Builder – more than just a page builder plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in versions up to, and including, 4.1.0. This makes it possible for authenticated attackers, with contributor-level access and above, to perform an unauthorized action.
CVSS Vector Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NTechnical Details
What Changed in the Fix
Changes introduced in v4.1.1
Source Code
WordPress.org SVN# Research Plan: CVE-2026-49782 - Elementor Missing Authorization in AJAX Handlers ## 1. Vulnerability Summary The **Elementor Website Builder** plugin for WordPress (versions <= 4.1.0) contains a missing authorization vulnerability within its centralized AJAX dispatching system. The plugin registe…
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Research Plan: CVE-2026-49782 - Elementor Missing Authorization in AJAX Handlers
1. Vulnerability Summary
The Elementor Website Builder plugin for WordPress (versions <= 4.1.0) contains a missing authorization vulnerability within its centralized AJAX dispatching system. The plugin registers a primary AJAX action, elementor_ajax, which acts as a gateway for dozens of internal sub-actions (commands). While some commands correctly verify user capabilities, several sub-actions (likely related to the newly introduced AI Layout and Template Kit features) fail to validate if the authenticated user has sufficient permissions (e.g., edit_others_posts or manage_options) before executing their logic. This allows a user with Contributor level access to perform actions they are not authorized for, such as manipulating layout data or accessing administrative content.
2. Attack Vector Analysis
- Vulnerable Endpoint:
POST /wp-admin/admin-ajax.php - AJAX Action:
elementor_ajax - Vulnerable Parameter:
actions(a JSON-encoded string containing a map of sub-commands and their data). - Authentication Requirement: Authenticated user with at least Contributor role.
- Preconditions: An attacker must obtain a valid AJAX nonce, which is typically localized in the WordPress admin dashboard for all logged-in users.
3. Code Flow (Inferred)
- Registration: The plugin registers the handler via
add_action( 'wp_ajax_elementor_ajax', [ $ajax_manager, 'handle_ajax_request' ] );. - Parsing: The
handle_ajax_requestmethod in theAjaxmanager module parses theactionsJSON payload. - Command Execution: It iterates through the requested actions and instantiates specific command classes (e.g., related to
AI LayoutorDocumentactions). - Vulnerability: The specific command handler (e.g.,
get_remote_template_contentorsave_builder_data) lacks acurrent_user_can()check or relies on an insufficient capability check that allows Contributors to modify or retrieve data they do not own.
4. Nonce Acquisition Strategy
Elementor nonces are exposed via localized JavaScript objects in the WordPress admin. Based on common Elementor architecture:
- JavaScript Variable:
window.elementorCommon.config.ajax.nonce - Acquisition Method:
- Log in as a Contributor.
- Navigate to any page in the WordPress admin dashboard (e.g.,
/wp-admin/profile.php). - Execute the following via
browser_eval:window.elementorCommon?.config?.ajax?.nonce || window.elementorConfig?.ajax?.nonce
- Alternative: If the script is only loaded on specific pages, navigate to
/wp-admin/admin.php?page=elementor-app(the Elementor App Loader, referenced inassets/js/app-loader.strings.js).
5. Exploitation Strategy
We will attempt to perform an unauthorized action using the elementor_ajax action. A common target for "Integrity: Low" (CVSS 4.3) is retrieving or slightly modifying layout content.
HTTP Request (using http_request tool)
- Method:
POST - URL:
http://localhost:8080/wp-admin/admin-ajax.php - Headers:
Content-Type: application/x-www-form-urlencoded - Body:
(Note: Replaceaction=elementor_ajax &_nonce=[EXTRACTED_NONCE] &actions={"exploit_cmd":{"action":"get_remote_template_content","data":{"editor_post_id":1,"template_id":"12345"}}}editor_post_idwith an existing Post ID andtemplate_idwith a valid or placeholder ID).
Alternative Sub-Actions (based on provided .strings.js files):
If get_remote_template_content is patched, try:
- AI Layout Generation:
{"cmd":{"action":"ai_layout_get_content","data":{...}}}(referenced byai-layout.strings.js). - Delete Content:
{"cmd":{"action":"delete_all_content","data":{"post_id":1}}}(referenced byeditor-document.strings.jsstring:"Attention: We are going to DELETE ALL CONTENT from this page.").
6. Test Data Setup
- Users:
- Administrator:
admin/password - Contributor:
attacker/password
- Administrator:
- Content:
- Create a Page (Post ID
1) as the Administrator and edit it with Elementor.
- Create a Page (Post ID
- Plugin:
- Ensure Elementor <= 4.1.0 is installed and activated.
7. Expected Results
- Vulnerable: The server returns a
200 OKwith a JSON object containing the result of the sub-action (e.g.,"success": trueand the template content or confirmation of deletion). - Patched: The server returns a
200 OKbut the JSON internal response indicates a failure, such as{"success": false, "data": "permission_denied"}or a403 Forbiddenstatus.
8. Verification Steps
- Check the HTTP response body for the
success: trueflag inside the specific action's response. - Database Check: Use WP-CLI to verify if the unauthorized action took effect:
If the action waswp post get 1 --field=post_contentdelete_all_content, the content should be empty or reverted.
9. Alternative Approaches
If the elementor_ajax action requires a specific editor state, try exploiting the REST API routes if they exist for the AI features:
- Endpoint:
/wp-json/elementor/v1/ai/get-layout - Method:
POST - Auth: Include the
X-WP-Nonce(retrieved viawindow.wpApiSettings.nonce).
Summary
The Elementor Website Builder plugin for WordPress (versions up to 4.1.0) fails to properly validate user capabilities within its centralized AJAX dispatching system. This allows authenticated users with Contributor-level permissions to execute restricted sub-actions, potentially leading to unauthorized data retrieval or content modification.
Security Fix
@@ -231,61 +231,6 @@ __( 'blocks', 'elementor' ); __( 'Loading', 'elementor' ); __( 'Show prompt history', 'elementor' ); -__( 'Cancel', 'elementor' ); -__( 'Yes, leave', 'elementor' ); -__( 'Preview unavailable', 'elementor' ); -__( 'Hero section on [topic] with heading, text, buttons on the right, and an image on the left', 'elementor.com' ) }, - // Translators: [Topic] is a placeholder for the user - please translate it as well - { text: __( 'About Us section on [topic] with heading, text, and big image below', 'elementor.com' ) }, - { text: __( 'Team section with four image boxes showcasing team members', 'elementor.com' ) }, - // Translators: [Topic] is a placeholder for the user - please translate it as well - { text: __( 'FAQ section with a toggle widget showcasing FAQs about [topic]', 'elementor.com' ) }, - { text: __( 'Gallery section with a carousel displaying three images at once', 'elementor.com' ) }, - // Translators: [Topic] is a placeholder for the user - please translate it as well - { text: __( 'Contact section with a form for [topic]', 'elementor.com' ) }, - { text: __( 'Client section featuring companies\' logos', 'elementor.com' ) }, - // Translators: [Topic] is a placeholder for the user - please translate it as well - { text: __( 'Testimonial section with testimonials, each featuring a star rating and an image', 'elementor.com' ) }, - // Translators: [Topic] is a placeholder for the user - please translate it as well - { text: __( 'Service section about [topic], showcasing four services with buttons', 'elementor.com' ) }, - // Translators: [Topic] is a placeholder for the user - please translate it as well - { text: __( 'Stats section with counters displaying data about [topic]', 'elementor.com' ) }, - { text: __( 'Quote section with colored background, featuring a centered quote', 'elementor.com' ) }, - // Translators: [Topic] is a placeholder for the user - please translate it as well - { text: __( 'Pricing section for [topic] with a pricing list', 'elementor.com' ) }, - // Translators: [Topic] is a placeholder for the user - please translate it as well - { text: __( 'Subscribe section featuring a simple email form, inviting users to stay informed on [topic]', 'elementor.com' ) }, -] ); - -const IconButtonWithTooltip = ( { tooltip, ...props } ) => ( - <Tooltip title={ tooltip }> - <Box component="span" sx={ { cursor: props.disabled ? 'default' : 'pointer' } }> - <IconButton { ...props } /> - </Box> - </Tooltip> -); - -IconButtonWithTooltip.propTypes = { - tooltip: PropTypes.string, - disabled: PropTypes.bool, -}; - -const BackButton = ( props ) => ( - <IconButtonWithTooltip size="small" color="secondary" tooltip={ __( 'Back to results', 'elementor' ); -__( 'Edit prompt', 'elementor' ); -__( 'Generate', 'elementor' ); -__( "Press '/' for suggested prompts or describe the layout you want to create", 'elementor' ); -__( 'Suggested Prompts', 'elementor' ); -__( 'Upgrade your plan for best results.', 'elementor' ); -__( 'You won’t be able to use layouts with Elementor Pro widgets until you do.', 'elementor' ); -__( 'Go Pro', 'elementor' ); -__( 'Go Pro', 'elementor' ); -__( 'Pro', 'elementor' ); -__( "This result includes an Elementor Pro widget that's not available with your current plan. Upgrade to use all the widgets in this result.", 'elementor' ); -__( 'AI', 'elementor' ); -__( 'Beta', 'elementor' ); -__( 'Reference a website', 'elementor' ); -__( 'Create variations from Template Library', 'elementor' ); __( 'None', 'elementor' ); __( 'Photographic', 'elementor' ); __( 'None', 'elementor' ); @@ -366,6 +311,61 @@ __( 'Generate again', 'elementor' ); __( 'Enhance prompt', 'elementor' ); __( 'Back', 'elementor' ); +__( 'Cancel', 'elementor' ); +__( 'Yes, leave', 'elementor' ); +__( 'Preview unavailable', 'elementor' ); +__( 'Hero section on [topic] with heading, text, buttons on the right, and an image on the left', 'elementor.com' ) }, + // Translators: [Topic] is a placeholder for the user - please translate it as well + { text: __( 'About Us section on [topic] with heading, text, and big image below', 'elementor.com' ) }, + { text: __( 'Team section with four image boxes showcasing team members', 'elementor.com' ) }, + // Translators: [Topic] is a placeholder for the user - please translate it as well + { text: __( 'FAQ section with a toggle widget showcasing FAQs about [topic]', 'elementor.com' ) }, + { text: __( 'Gallery section with a carousel displaying three images at once', 'elementor.com' ) }, + // Translators: [Topic] is a placeholder for the user - please translate it as well + { text: __( 'Contact section with a form for [topic]', 'elementor.com' ) }, + { text: __( 'Client section featuring companies\' logos', 'elementor.com' ) }, + // Translators: [Topic] is a placeholder for the user - please translate it as well + { text: __( 'Testimonial section with testimonials, each featuring a star rating and an image', 'elementor.com' ) }, + // Translators: [Topic] is a placeholder for the user - please translate it as well + { text: __( 'Service section about [topic], showcasing four services with buttons', 'elementor.com' ) }, + // Translators: [Topic] is a placeholder for the user - please translate it as well + { text: __( 'Stats section with counters displaying data about [topic]', 'elementor.com' ) }, + { text: __( 'Quote section with colored background, featuring a centered quote', 'elementor.com' ) }, + // Translators: [Topic] is a placeholder for the user - please translate it as well + { text: __( 'Pricing section for [topic] with a pricing list', 'elementor.com' ) }, + // Translators: [Topic] is a placeholder for the user - please translate it as well + { text: __( 'Subscribe section featuring a simple email form, inviting users to stay informed on [topic]', 'elementor.com' ) }, +] ); + +const IconButtonWithTooltip = ( { tooltip, ...props } ) => ( + <Tooltip title={ tooltip }> + <Box component="span" sx={ { cursor: props.disabled ? 'default' : 'pointer' } }> + <IconButton { ...props } /> + </Box> + </Tooltip> +); + +IconButtonWithTooltip.propTypes = { + tooltip: PropTypes.string, + disabled: PropTypes.bool, +}; + +const BackButton = ( props ) => ( + <IconButtonWithTooltip size="small" color="secondary" tooltip={ __( 'Back to results', 'elementor' ); +__( 'Edit prompt', 'elementor' ); +__( 'Generate', 'elementor' ); +__( "Press '/' for suggested prompts or describe the layout you want to create", 'elementor' ); +__( 'Suggested Prompts', 'elementor' ); +__( 'Upgrade your plan for best results.', 'elementor' ); +__( 'You won’t be able to use layouts with Elementor Pro widgets until you do.', 'elementor' ); +__( 'Go Pro', 'elementor' ); +__( 'Go Pro', 'elementor' ); +__( 'Pro', 'elementor' ); +__( "This result includes an Elementor Pro widget that's not available with your current plan. Upgrade to use all the widgets in this result.", 'elementor' ); +__( 'AI', 'elementor' ); +__( 'Beta', 'elementor' ); +__( 'Reference a website', 'elementor' ); +__( 'Create variations from Template Library', 'elementor' );
Exploit Outline
The exploit targets the 'elementor_ajax' endpoint, which manages internal plugin commands. An attacker with Contributor-level access must first obtain a valid AJAX nonce, typically available via the 'elementorCommon.config.ajax.nonce' global variable in the admin dashboard. The attacker then sends a POST request to '/wp-admin/admin-ajax.php' with the 'actions' parameter containing a JSON-encoded payload. This payload specifies a restricted sub-command (e.g., 'delete_all_content' or 'get_remote_template_content') and its associated data (like a target Post ID). Because the plugin's server-side logic fails to verify if the requesting user has the required capabilities for that specific sub-action, the command is executed with administrative privileges.
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