Simple User Registration <= 6.4 - Authenticated (Contributor+) Privilege Escalation

2025-09-20 00:00

Peter Thaleikis

Strategic Overview

Status

Unpatched

Affected PluginMemberHero – Simple User Registration & Login

Affected Version<= 6.4

CVSS8.8High

CVECVE-2025-53428

View all MemberHero – Simple User Registration & Login vulnerabilities

Vulnerability Overview

The Simple User Registration plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 6.4. This makes it possible for authenticated attackers, with Contributor-level access and above, to gain access to administrative-level user accounts.

Technical Analysis

REMEDIATION: No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement. --- IDENTIFIER: CWE-269 (Improper Privilege Management) The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

External References

https://www.cve.org/CVERecord?id=CVE-2025-53428 https://www.wordfence.com/threat-intel/vulnerabilities/id/a95e98e4-97a7-436f-9ceb-6ff6fecd860f

CVSS Vector

8.8

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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