WordPress security changelog
HIGH CVE-2026-6431 Deferred

Profile Builder permits unauthenticated stored cross-site scripting through biographical information

Profile Builder through 3.15.7 does not adequately sanitize and escape the Biographical Info meta field. An unauthenticated submitter can store script content in that field, which executes when a user visits a page that renders the injected value.

CVE / CNA score 7.2 CVSS 3.1 · security@wordfence.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor
Plugin slug
profile-builder
Affected
<= 3.15.7
Safe version
See mitigation notes
Published
Sep 07, 2026
Weakness
CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Sep 07, 2026 and is one of 29 known issues for this plugin.

Update, patch or deactivate.

No confirmed fixed release is identified. Obtain a vendor-confirmed patch or prevent unauthenticated users from submitting affected profile data, then review stored biographical information for injected markup.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Technical description

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.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Primary and upstream sources