CVE-2026-93656
Received Received - Intake

Stored XSS in User Profile Builder WordPress Plugin

Publication date: 2026-09-25

Last updated on: 2026-09-25

Assigner: Wordfence

Description
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.

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Meta Information

Published
2026-09-25
Last Modified
2026-09-25
Generated
2026-09-25
AI Q&A
2026-09-25
EPSS Evaluated
N/A
NVD
CVE-2026-93656
EUVD
EUVD-2026-86596

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
wp_user_profile_builder wp_user_profile_builder to 4.0.2 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This is a Stored Cross-Site Scripting (XSS) vulnerability in the User Profile Builder WordPress plugin. It allows authenticated attackers with subscriber-level access or higher to inject malicious scripts via the Avatar field. The flaw exists due to insufficient input sanitization and output escaping in versions up to 4.0.2.

Detection Guidance

Check WordPress admin profiles for suspicious avatar URLs or scripts in user edit screens. Inspect GET requests to /wp-admin/profile.php for nonce-free access attempts. Review user roles with subscriber-level access or higher for unauthorized changes.

Impact Analysis

An attacker could execute arbitrary web scripts in pages viewed by other users, such as administrators. This could lead to unauthorized actions, data theft, or session hijacking. The attack requires no profile-form submission and can be triggered via a simple GET request to a specific admin page.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive user data, violating GDPR's data protection requirements and HIPAA's security rules for protected health information. It may result in non-compliance due to potential data breaches or unauthorized data exposure.

Mitigation Strategies

Update the User Profile Builder plugin to the latest version. Remove suspicious user accounts or reset compromised credentials. Implement strict input validation for avatar fields. Monitor admin access logs for unusual activity.

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