User Profile Builder <= 4.0.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'date' Shortcode Attribute
Strategic Overview
- Status
- Patched in 4.0.1
- Affected Plugin
- User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor
- Affected Version
<= 4.0.0- CVSS
- 6.4Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2026-75965
At a glance
CVE-2026-75965 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the User Profile Builder WordPress plugin, affecting versions <= 4.0.0. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Contributor level or above. The issue is fixed in version 4.0.1; sites on affected versions should update now. Disclosed August 2026, reported by Wordfence PRISM.
Vulnerability Overview
The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'date' Shortcode Attribute in all versions up to, and including, 4.0.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires the wppb_toolbox_shortcodes_settings[format-date] option to be set to 'yes' by an administrator for the shortcode to be active and the vulnerability to be exploitable.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
User Profile Builder <= 4.0.0 carries this weakness at date, and reaching it takes an account at Contributor level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.
Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For User Profile Builder the fix is 4.0.1: builds <= 4.0.0 are affected, anything from 4.0.1 onward is not.
Remediation
Update to version 4.0.1, or a newer patched version
How does WordSec protect against this?
An attacker needs Contributor access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: User Profile Builder 4.0.1 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor
- 9.8CVE-2026-15826: User Profile Builder <= 3.16.4 Authentication Bypass
CVE-2026-15826 - 9.8CVE-2025-15030: User Profile Builder <= 3.15.1 Privilege Escalation
CVE-2025-15030 - 9.8CVE-2024-6695: User Profile Builder Authentication Bypass
CVE-2024-6695 - 9.8CVE-2023-2297: Profile Builder Insecure Password Reset Mechanism
CVE-2023-2297 - 9.8CVE-2021-24527: Profile Builder <= 3.4.8 Admin Access
CVE-2021-24527 - 9.8Profile Builder <= 3.1.0 Privilege Escalation
- 9.8Profile Builder Authentication Bypass
- 8.8CVE-2021-36915: Profile Builder CSRF
CVE-2021-36915
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C