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.
References7
- plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/f…
- plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/f…
- plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/f…
- plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/f…
- plugins.trac.wordpress.org/changeset/3741133/profile-builder
- plugins.trac.wordpress.org/changeset/3741133/profile-builder/tr…
- www.wordfence.com/threat-intel/vulnerabilities/id/2f466add-992b…
Metrics
- CVSS 3.1
-
6.4
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 0% percentile: 9 · as of 10 November 2026
- CWE
- CWE-79
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.