CVE-2026-2356
MEDIUMCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
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2Tags
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.
Analysis
Unauthenticated attackers can delete arbitrary user accounts on WordPress sites running the User Registration & Membership plugin through version 5.1.2 due to insufficient validation of the member_id parameter in the register_member function. This IDOR vulnerability specifically targets newly registered accounts marked with the urm_user_just_created meta flag. …
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Remediation
Within 30 days: Identify affected systems running for WordPress is vulnerable to Insecure Direct Object Refere and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
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