CVE-2026-100186User Profile Builder <= 4.0.3 - Unauthenticated Stored Cross-Site Scripting via First Name Field
Updated under an hour ago ()
Does this affect you?
It affects cozmoslabs User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.24%, higher than 14% of scored CVEs.
The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via First Name Field in all versions up to, and including, 4.0.3 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. This vulnerability is only exploitable when the Email Confirmation feature is enabled in Profile Builder.
- CVSS
- 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.24% (percentile 14)
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 16, 2026
Affected products
cozmoslabs User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor cozmoslabs:user_profile_builder_beautiful_user_registration_forms_user_profiles_and_user_role_editor (from the name) | through 4.0.3 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f3f2ecdb-bbd0-4834-b731-88724ca0dfd7?source=cve
- https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/features/email-confirmation/class-email-confirmation.php#L99
- https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/features/email-confirmation/class-email-confirmation.php#L100
- https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/front-end/default-fields/first-name/first-name.php#L56
- https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/features/email-confirmation/email-confirmation.php#L470
- https://plugins.trac.wordpress.org/changeset/3741133/profile-builder
- https://plugins.trac.wordpress.org/changeset/3741133/profile-builder/trunk/features/email-confirmation/class-email-confirmation.php
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.