XSS in Cozmoslabs User Profile Builder – Beautiful Registration Forms, Profiles & Role Editor

CVE-2026-107748

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 class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-107748?
CVE-2026-107748 is a medium-severity vulnerability in Cozmoslabs User Profile Builder – Beautiful Registration Forms, Profiles & Role Editor, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-10-16.
How severe is CVE-2026-107748?
Medium severity. CVSS v3 base score is 6.4 out of 10.