CVE-2026-6431CWE-79cross-site-scripting

CVE-2026-6431

High · published September 7, 2026

CVSS v3.1
7.2
EPSS
0%
Percentile
35.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00419 · 35.1th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-07T17:20Z
References (6)
https://plugins.trac.wordpress.org/browser/profile-builder/tags/3.15.6/features/email-confirmation/class-email-confirmation.php#L95 · [email protected]https://plugins.trac.wordpress.org/browser/profile-builder/tags/3.15.6/front-end/class-formbuilder.php#L743 · [email protected]https://plugins.trac.wordpress.org/browser/profile-builder/trunk/features/email-confirmation/class-email-confirmation.php#L95 · [email protected]https://plugins.trac.wordpress.org/browser/profile-builder/trunk/front-end/class-formbuilder.php#L743 · [email protected]https://plugins.trac.wordpress.org/changeset/3511465 · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/99e6cc7b-7e65-4b8d-a927-1329ed6c1954?source=cve · [email protected]
EPSS history
Timeline
  • 09 SEP 03:20Z
    EPSS moved — → 0%
    epss
  • 07 SEP 12:29Z
    User Profile Builder <= 3.15.7 - Unauthenticated Stored Cross-Site Scripting via 'Biographical Info' Meta Field
    cvelistv5