WordPress security changelog
HIGH CVE-2026-16736 Received

User Registration permits account creation while registration is disabled

User Registration & Membership before 5.2.6 processes public registration-form submissions without enforcing WordPress's registration-disabled setting. An unauthenticated visitor can therefore create a new account despite the administrator having closed registration. This unscored record received deeper review because it gives unauthenticated callers an account-creation primitive that may become more serious when forms assign elevated or application-specific roles. The CNA does not disclose the form route, action or parameters.

CVE / CNA score 7.5 CVSS 3.1 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
NVD score Pending NVD has not published its own CVSS assessment.
Component
User Registration & Membership
Plugin slug
user-registration
Affected
< 5.2.6
Safe version
5.2.6
Published
Aug 05, 2026
Weakness
CWE-284 — Improper Access Control

This CVE was published Aug 05, 2026 and is one of 42 known issues for this plugin.

Update, patch or deactivate.

Update User Registration & Membership to 5.2.6 or later. Audit accounts created while registration was intended to be closed and remove unauthorized users or sessions.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

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 Registration & Membership WordPress plugin before 5.2.6 does not enforce the site's registration-disabled setting when processing registration-form submissions, allowing unauthenticated users to create new accounts even when the administrator has turned off open registration.

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

Primary and upstream sources