CVE-2026-75964
Received Received - Intake

Stored XSS in User Profile Builder WordPress Plugin

Publication date: 2026-09-01

Last updated on: 2026-09-01

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 the 'email' parameter in all versions up to, and including, 4.0.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload reaches administrators with the manage_options capability when they visit the Users > Unconfirmed Email Addresses list table and interact with row-action links, as the poisoned javascript: href is rendered verbatim into the page HTML by row_actions().

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Meta Information

Published
2026-09-01
Last Modified
2026-09-01
Generated
2026-09-01
AI Q&A
2026-09-01
EPSS Evaluated
N/A
NVD
CVE-2026-75964
EUVD
EUVD-2026-68985

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
wp_user_profile_builder wp_user_profile_builder to 4.0.0 (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.

Attack-Flow Graph

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Executive Summary

This is a Stored Cross-Site Scripting (XSS) vulnerability in the User Profile Builder WordPress plugin. It allows unauthenticated attackers to inject malicious scripts via the 'email' parameter due to insufficient input sanitization. The injected scripts execute when users, including administrators, access affected pages.

Detection Guidance

This vulnerability can be detected by checking for the presence of the User Profile Builder plugin versions up to and including 4.0.0. Inspect WordPress installations for the plugin and verify its version. Look for suspicious JavaScript code in user profile pages or unconfirmed email addresses.

Impact Analysis

Unauthenticated attackers can inject scripts that execute when administrators or other users access infected pages. This could lead to theft of sensitive data, session hijacking, or unauthorized actions performed on behalf of users.

Compliance Impact

This vulnerability could lead to unauthorized access to user data, violating GDPR's data protection principles and HIPAA's security requirements. It may result in data breaches, non-compliance penalties, and reputational damage.

Mitigation Strategies

Immediately update the User Profile Builder plugin to the latest version beyond 4.0.0. If an update is unavailable, consider disabling or removing the plugin until a patch is released. Review user accounts for unauthorized changes or scripts.

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