User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor <= 3.16.5 - Missing Authorization
Strategic Overview
- Status
- Patched in 3.16.6
- Affected Plugin
- User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor
- Affected Version
<= 3.16.5- CVSS
- 5.3Medium
- Weakness type
- CWE-862 · Missing Authorization
- CVE
CVE-2026-66701
At a glance
CVE-2026-66701 is a medium-severity Missing Authorization vulnerability in the User Profile Builder WordPress plugin, affecting versions <= 3.16.5. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 3.16.6; sites on affected versions should update now. Disclosed July 2026, reported by Ananda Dhakal.
Vulnerability Overview
The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in versions up to, and including, 3.16.5. This makes it possible for unauthenticated attackers to perform an unauthorized action.
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 privileges on the target site, and no interaction from a victim user.
CWE-862: Missing Authorization
Reaching this weakness in User Profile Builder <= 3.16.5 takes a caller who can reach the endpoint. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.
Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For User Profile Builder the fix is 3.16.6: builds <= 3.16.5 are affected, anything from 3.16.6 onward is not.
Remediation
Update to version 3.16.6, or a newer patched version
How WordSec helps
Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: User Profile Builder 3.16.6 closes this, and updating the plugin is the step that ends it.
- Login Security
- 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-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
- 8.8Profile Builder/Profile Builder Pro <= 3.3.2 Blind SQL Injection
- 8.2CVE-2024-0324: User Profile Builder <= 3.10.8 Plugin Settings Change
CVE-2024-0324
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