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Vulnerabilities and Security Researches

User Registration – Custom Registration Form, Login Form, and User Profile WordPress Plugin, CVE-2026-2356

CVE, Research URL

CVE-2026-2356

Published on
Feb 26, 2026
Research Description
The User Registration & Membership – Custom Registration Form, Login Form, and User Profile plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 5.1.2 via the 'register_member' function, due to missing validation on the 'member_id' user controlled key. This makes it possible for unauthenticated attackers to delete arbitrary user accounts that newly registered on the site who has the 'urm_user_just_created' user meta set.
Affected versions
max 5.1.3.
Status
vulnerable