Description

The Brizy – Page Builder plugin for WordPress is vulnerable to Unauthenticated Stored Cross-Site Scripting in all versions up to, and including, 2.8.11 This is due to a combination of missing nonce verification for unauthenticated form submissions, insufficient handling of FileUpload fields when no file is uploaded, and the reversal of security encoding via html_entity_decode() followed by unescaped output in the admin view. The submit_form() function skips nonce verification for non-logged-in users (api.php:198). The handleFileTypeFields() function fails to overwrite user-supplied values when no file is attached. While htmlentities() is applied during storage, html_entity_decode() reverses this on display (form-entries.php:79). The form-data.php template outputs FileUpload values directly in href attributes without esc_url(). This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute when an administrator views the form Leads page.

Weaknesses 1

References 8

• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/brizy/tags/2.7.24/admin/form-entries.php#L79
• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/brizy/tags/2.7.24/admin/views/form-data.php#L11
• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/brizy/tags/2.7.24/editor/forms/api.php#L198
• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/brizy/tags/2.7.24/editor/forms/api.php#L295
• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/brizy/trunk/admin/views/form-data.php#L11
• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3502206/brizy/trunk/admin/views/form-data.php
• plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?old_path=%2Fbrizy/tags/2.8.11&new_path=%2Fbrizy/tags/2.8.12
• wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/78ec499e-5edd-4f11-9090-f79868864fee?source=cve

Remediation