CVE-2026-107748

CVSS 6.4 (medium) · published 2026-10-16

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 'display_name' parameter in all versions up to, and including, 4.0.3 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. The payload persists in wp_comments.comment_author independently of the user account, so removing or changing the attacker's display name after the comment is posted does not neutralize the stored script.

Weakness: CWE-79

Source: NVD CVE-2026-107748

References

• https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/features/functions.php#L582
• https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/features/functions.php#L585
• https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/features/functions.php#L593
• https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/front-end/default-fields/display-name/display-name.php#L81
• https://plugins.trac.wordpress.org/changeset/3741133/profile-builder
• https://plugins.trac.wordpress.org/changeset/3741133/profile-builder/trunk/features/functions.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/2f466add-992b-46c7-a1cc-5c05d59f4bdf?source=cve

Check your software

Connect an AI agent to the FixLane MCP server or ask the Telegram bot to check what you have installed against incidents with a verified fixed version.