Vulnerability in User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor — CVE-2026-93656
What to do now
Update User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor to 4.0.3 or later.
Affected versions
- Everything up to and including 4.0.2
Affected: User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor (plugin, profile-builder)
What the vulnerability is
The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Avatar Field in all versions up to, and including, 4.0.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is exploitable via a nonce-free GET request to /wp-admin/profile.php, requiring no profile-form submission; a Subscriber can plant the malicious attachment URL, which then executes when an administrator opens that user's Edit User screen.
Sources
- https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.2/front-end/default-fields/avatar/avatar.php#L43
- https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.2/front-end/default-fields/avatar/avatar.php#L67
- https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.2/front-end/default-fields/avatar/avatar.php#L75
- https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.2/front-end/default-fields/fields-functions.php#L30
- https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.2/front-end/default-fields/upload/upload_helper_functions.php#L286
- https://plugins.trac.wordpress.org/changeset/3708665/profile-builder