What’s Vulnerable › Vulnerabilities

CVE-2026-107748: User Profile Builder <= 4.0.3 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'display_name' Parameter

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-16 · updated 2026-10-16
• Weakness: CWE-79

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 '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.

Affected products

• cozmoslabs User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor: through 4.0.3

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

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