Profile Builder permits unauthenticated stored cross-site scripting in unconfirmed-email administration

Profile Builder through 4.0.0 permits an unauthenticated attacker to submit a malicious email value that is later rendered as a javascript: row-action link in Users > Unconfirmed Email Addresses. The value reaches row_actions() without adequate sanitization or escaping and executes when an administrator with manage_options interacts with the poisoned link.

CVE / CNA score 6.1 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: <= 4.0.0
Safe version: See mitigation notes
Published: Sep 01, 2026
Weakness: CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Sep 01, 2026 and is one of 29 known issues for this plugin.

What to do

Update, patch or deactivate.

Update to a confirmed release newer than 4.0.0 when available. Until then, disable the affected email-confirmation workflow when warranted, review unconfirmed registrations for malicious values, and invalidate privileged sessions if administrators interacted with affected rows.

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.

Source record

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 'email' parameter in all versions up to, and including, 4.0.0 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 payload reaches administrators with the manage_options capability when they visit the Users > Unconfirmed Email Addresses list table and interact with row-action links, as the poisoned javascript: href is rendered verbatim into the page HTML by row_actions().

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

References

Primary and upstream sources

Data attribution: This product uses the NVD API but is not endorsed or certified by the NVD.

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