How severe is CVE-2026-6431?

High severity. CVSS v3 base score is 7.2 out of 10.

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

CVE-2026-6431

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 'Biographical Info' meta field parameter in all versions up to, and including, 3.15.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

Affected products

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

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-6431?: CVE-2026-6431 is a high-severity vulnerability in Cozmoslabs User Profile Builder – Beautiful Registration Forms, Profiles & Role Editor, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-09-07.
How severe is CVE-2026-6431?: High severity. CVSS v3 base score is 7.2 out of 10.