Simple User Registration <= 6.3 - Unauthenticated Privilege Escalation

2025-06-25 13:47

Chuck

Strategic Overview

Status

Patched in 6.4

Affected PluginMemberHero – Simple User Registration & Login

Affected Version<= 6.3

CVSS9.8Critical

CVECVE-2025-4334

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, 6.3. This is due to insufficient restrictions on user meta values that can be supplied during registration. This makes it possible for unauthenticated attackers to register as an administrator.

Technical Analysis

REMEDIATION: Update to version 6.4, or a newer patched version --- 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-2025-4334 https://www.wordfence.com/threat-intel/vulnerabilities/id/c211e0c0-3086-43d2-853c-489f9c42b0ab

CVSS Vector

9.8

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

Base

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

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