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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.

PUBLISHED Reserved 2025-05-05 | Published 2025-06-26 | Updated 2026-04-08 | Assigner Wordfence




CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-269 Improper Privilege Management

Product status

Default status
unaffected

Any version
affected

Timeline

2025-06-25:Disclosed

Credits

Cheng Liu finder

References

www.wordfence.com/...-3086-43d2-853c-489f9c42b0ab?source=cve

plugins.trac.wordpress.org/...inc/classes/class.register.php

plugins.trac.wordpress.org/changeset/3327946/

cve.org (CVE-2025-4334)

nvd.nist.gov (CVE-2025-4334)

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