CVE-2026-2633: CWE-862 Missing Authorization in stellarwp Kadence Blocks — Page Builder Toolkit for Gutenberg Editor
The Gutenberg Blocks with AI by Kadence WP plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.6.1. This is due to a missing capability check in the `process_image_data_ajax_callback()` function which handles the `kadence_import_process_image_data` AJAX action. The function's authorization check via `verify_ajax_call()` only validates `edit_posts` capability but fails to check for the `upload_files` capability. This makes it possible for authenticated attackers, with Contributor-level access and above, to upload arbitrary images from remote URLs to the WordPress Media Library, bypassing the standard WordPress capability restriction that prevents Contributors from uploading files.
AI Analysis
Technical Summary
CVE-2026-2633 is a missing authorization vulnerability (CWE-862) in the Kadence Blocks — Page Builder Toolkit for Gutenberg Editor WordPress plugin. The issue arises because the `process_image_data_ajax_callback()` function, which handles the `kadence_import_process_image_data` AJAX action, only verifies the `edit_posts` capability but neglects to check the `upload_files` capability. As a result, authenticated users with Contributor-level permissions or higher can upload arbitrary images from remote URLs to the WordPress Media Library, circumventing the intended capability restrictions.
Potential Impact
Authenticated users with Contributor-level access or higher can upload arbitrary images to the WordPress Media Library, which normally should be restricted. This could lead to unauthorized content being added to the site, potentially facilitating further attacks or misuse of storage. There is no indication of direct confidentiality or availability impact, and no known exploits in the wild have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, administrators should consider restricting Contributor-level user capabilities or disabling the affected plugin if possible. Monitoring plugin updates from stellarwp for a security patch is recommended.
CVE-2026-2633: CWE-862 Missing Authorization in stellarwp Kadence Blocks — Page Builder Toolkit for Gutenberg Editor
Description
The Gutenberg Blocks with AI by Kadence WP plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.6.1. This is due to a missing capability check in the `process_image_data_ajax_callback()` function which handles the `kadence_import_process_image_data` AJAX action. The function's authorization check via `verify_ajax_call()` only validates `edit_posts` capability but fails to check for the `upload_files` capability. This makes it possible for authenticated attackers, with Contributor-level access and above, to upload arbitrary images from remote URLs to the WordPress Media Library, bypassing the standard WordPress capability restriction that prevents Contributors from uploading files.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-2633 is a missing authorization vulnerability (CWE-862) in the Kadence Blocks — Page Builder Toolkit for Gutenberg Editor WordPress plugin. The issue arises because the `process_image_data_ajax_callback()` function, which handles the `kadence_import_process_image_data` AJAX action, only verifies the `edit_posts` capability but neglects to check the `upload_files` capability. As a result, authenticated users with Contributor-level permissions or higher can upload arbitrary images from remote URLs to the WordPress Media Library, circumventing the intended capability restrictions.
Potential Impact
Authenticated users with Contributor-level access or higher can upload arbitrary images to the WordPress Media Library, which normally should be restricted. This could lead to unauthorized content being added to the site, potentially facilitating further attacks or misuse of storage. There is no indication of direct confidentiality or availability impact, and no known exploits in the wild have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, administrators should consider restricting Contributor-level user capabilities or disabling the affected plugin if possible. Monitoring plugin updates from stellarwp for a security patch is recommended.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-02-17T17:42:46.510Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6995672780d747be204d2959
Added to database: 2/18/2026, 7:15:51 AM
Last enriched: 4/9/2026, 6:43:44 PM
Last updated: 5/22/2026, 7:12:50 PM
Views: 116
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