CVE-2026-107748

MediumCVSS 6.4

Published: 16/10/2026(UTC)Updated: 16/10/2026(UTC)Translated: 16/10/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.20%

9th percentile - higher than 9% of all known CVEs

Summary

The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress in versions up to and including 4.0.3 is vulnerable to Stored Cross-Site Scripting via the 'display_name' parameter. Authenticated attackers with subscriber-level access and above can inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Risk Assessment

The malicious script can execute in the browser of other users, potentially leading to session theft or other actions. The payload persists in wp_comments.comment_author independently of the user account, so changing the display name does not neutralize the script.

Recommendation

Update the plugin to a version later than 4.0.3 to fix the Stored XSS vulnerability.

Other vulnerabilities in User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor

CVE-2026-115807High
The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Limited Privilege Escalation in all versions up to, and including, 4.0.3. This is due to the Gutenberg Register block passing the attacker-controlled Assigned Role attribute directly into the [wppb-register] shortcode without server-side authorization. The role guard in the form builder only downgrades roles that carry the manage_options or remove_users capability, leaving the Editor role and other privileged non-Administrator roles completely unrestricted. This makes it possible for authenticated attackers with Author-level access and above to create new WordPress accounts bearing the Editor role (or any other role that lacks the two guarded capabilities).

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS