User Profile Builder <= 4.0.4 - Authenticated (Administrator+) Privilege Escalation via Front-End Edit Profile Form on Multisite

ID

WPSEC-2026-1356

Plugin

User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor (profile-builder)

Affected

all versions before 4.0.5

Remediation

Update to 4.0.5 or later.

CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Weakness

CWE-269

Usage

Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-10-21

Attack surface

User Profile Builder on WPSec AttackSurface

Fix released

2026-10-19

Published

2026-10-21

Description

The User Profile Builder plugin for WordPress is vulnerable to Privilege Escalation via the front-end Edit Profile form's 'edit_user' parameter in all versions up to, and including, 4.0.4. The plugin lets any subsite user with the remove_users or manage_options capability edit any account. It does not check whether the target is a network Super Admin or belongs to other sites. On WordPress Multisite installations, this makes it possible for authenticated attackers with subsite Administrator-level access and above to change the password and details of a Super Admin or another site's user, leading to a takeover of the whole network.

References

• https://wpsec.com/vuln/WPSEC-2026-1356/
• https://plugins.svn.wordpress.org/profile-builder/tags/4.0.5/
• https://wordpress.org/plugins/profile-builder/

Published by WPSec. Provided as is, without warranty. Corrections: contact us.

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