Simple User Registration <= 6.3 - Unauthenticated Privilege Escalation
| CVE | CVE-2025-4334 |
|---|---|
| CVSS | 9.8 (Critical) |
| Publicly Published | June 25, 2025 |
| Last Updated | May 19, 2026 |
| Researcher |
Chuck
- None
|
Description
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.
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Vulnerability Details for MemberHero – Simple User Registration & Login
| Software Type | Plugin |
|---|---|
| Software Slug | wp-registration (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 6.4, or a newer patched version |
| Affected Version |
|
| Patched Version |
|
Recent vulnerabilities in MemberHero – Simple User Registration & Login
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | Simple User Registration <= 6.7 - Authenticated (Subscriber+) Privilege Escalation via profile_save_field | CVE-2026-0844 | johska | January 27, 2026 | |
| 2 | Simple User Registration <= 6.6 - Unauthenticated Stored Cross-Site Scripting | CVE-2025-12160 | Athiwat Tiprasaharn (Jitlada) | November 20, 2025 | |
| 3 | Simple User Registration <= 6.4 - Authenticated (Contributor+) Privilege Escalation | CVE-2025-53428 | Peter Thaleikis | September 20, 2025 | |
| 4 | Simple User Registration <= 5.5 - Missing Authorization to User Deletion | CVE-2024-53810 | stealthcopter | December 2, 2024 | |
| 5 | Simple User Registration <= 6.7 - Missing Authorization to Account Takeover | CVE-2024-49604 | stealthcopter | October 17, 2024 |
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