# CVE-2026-107748: User Profile Builder display_name stored XSS

Source: https://junglewise.ai/threats/cve-2026-107748-the-user-profile-builder-beautiful-user-registration-forms-user  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-16. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-107748 · Severity: medium · CVSS 6.4 · Published 2026-10-16

The User Profile Builder WordPress plugin allows authenticated users to inject malicious scripts into comment author names that execute when pages are viewed. An attacker with basic subscriber-level access can inject JavaScript that persists in the database and affects all site visitors who access the injected page, creating a persistent website compromise even if the attacker's account is later removed.

Technologies: [Cozmoslabs User Profile Builder](https://junglewise.ai/threats/technologies/user-profile-builder). Vendors: [Cozmoslabs](https://junglewise.ai/threats/vendors/cozmoslabs).

## Quick answers

**Is CVE-2026-107748 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-107748 being exploited in the wild.

**How severe is CVE-2026-107748?** Medium severity, with a CVSS score of 6.4, published 16 October 2026.

**Which products and versions are affected?** Cozmoslabs User Profile Builder up to and including 4.0.3.

**Is there a fix for CVE-2026-107748?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-107748 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-107748?** Check whether you run Cozmoslabs User Profile Builder at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The plugin fails to properly sanitize and escape the 'display_name' parameter, allowing authenticated attackers (subscriber or higher) to inject stored XSS payloads via comments. The malicious script is persisted in the wp_comments.comment_author field and executes in the context of any page displaying that comment, independent of subsequent changes to the attacker's account.

## Affected products

- Cozmoslabs User Profile Builder up to and including 4.0.3

## Timeline

- 2026-10-16: disclosed

## References

- [https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/features/functions.php](https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/features/functions.php)
- [https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/features/functions.php](https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/features/functions.php)

## Related threats

- [User Profile Builder reflected XSS in admin page](https://junglewise.ai/threats/cve-2026-111948-the-user-profile-builder-wordpress-plugin-before-4-0-1-does-not)
- [User Profile Builder privilege escalation via role parameter](https://junglewise.ai/threats/cve-2026-109447-the-user-profile-builder-beautiful-user-registration-forms-user)
- [User Profile Builder stored cross-site scripting in first name field](https://junglewise.ai/threats/cve-2026-100186-the-user-profile-builder-beautiful-user-registration-forms-user)
- [User Profile Builder authentication bypass in file upload](https://junglewise.ai/threats/cve-2026-76548-user-profile-builder-authentication-bypass-in-file-upload)
- [User Profile Builder stored XSS in format date shortcode](https://junglewise.ai/threats/cve-2026-76546-user-profile-builder-stored-xss-in-format-date-shortcode)