CVE-2026-115807

11th percentile - higher than 11% of all known CVEs

The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Limited Privilege Escalation in all versions up to, and including, 4.0.3. This is due to the Gutenberg Register block passing the attacker-controlled Assigned Role attribute directly into the [wppb-register] shortcode without server-side authorization. The role guard in the form builder only downgrades roles that carry the manage_options or remove_users capability, leaving the Editor role and other privileged non-Administrator roles completely unrestricted. This makes it possible for authenticated attackers with Author-level access and above to create new WordPress accounts bearing the Editor role (or any other role that lacks the two guarded capabilities).

This allows an attacker with Author-level access to escalate to the Editor role, which can lead to content modification, publishing, or other actions requiring higher privileges. It may compromise the integrity of the site and enable further attacks.

Update the User Profile Builder plugin to a version later than 4.0.3 if available. Until then, restrict registration capabilities or verify the privileges assigned to new accounts.