Insecure Direct Object Reference in User Registration & Membership Plugin from WordPress
CVE-2026-7651

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder
Vendor
CVE Published:
28 May 2026

What is CVE-2026-7651?

The User Registration & Membership plugin for WordPress is susceptible to an Insecure Direct Object Reference vulnerability due to a lack of ownership validation for user-controlled attachment IDs. This flaw allows authenticated users with subscriber-level access or higher to bypass restrictions and delete any media attachments uploaded by other users, including administrators. The vulnerability arises from improper handling of attachment IDs, leading to potential unauthorized removals of critical media content in WordPress installations.

Affected Version(s)

User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder 0 <= 5.1.5

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/user-registrat...
https://plugins.trac.wordpress.org/browser/user-registrat...

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Supakiad S.
.