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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.

PUBLISHED Reserved 2026-02-11 | Published 2026-02-26 | Updated 2026-02-26 | Assigner Wordfence




MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Problem types

CWE-284 Improper Access Control

Product status

Default status
unaffected

* (semver)
affected

Timeline

2026-02-11:Vendor Notified
2026-02-25:Disclosed

Credits

Phú finder

References

www.wordfence.com/...-4f78-4855-a01d-b15f73407822?source=cve

plugins.trac.wordpress.org/...s/membership/includes/AJAX.php

cve.org (CVE-2026-2356)

nvd.nist.gov (CVE-2026-2356)

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