CVE-2025-4334

Simple User Registration <= 6.3 - Unauthenticated Privilege Escalation

CVSS 9.8 CRITICALEPSS 2.1%CWE-269

Vexday Risk Score

63High priority

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 9.8EPSS 2.1%KEV nãoPoC públicaNuclei simMetasploit —Patch —

Lifecycle

26 Jun 2025Published on NVD

26 Jun 2025Public PoC

Recommendation: Plan a near-term fix — a public PoC already exists.

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.

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

Affected products

nmedia · Simple User Registration

public PoCs found — 2

githubgithub.com/Nxploited/CVE-2025-4334★ 7 githubgithub.com/0xgh057r3c0n/CVE-2025-4334★ 3

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References

https://plugins.trac.wordpress.org/browser/wp-registration/trunk/inc/classes/class.register.php#L135 https://plugins.trac.wordpress.org/changeset/3327946/https://www.wordfence.com/threat-intel/vulnerabilities/id/c211e0c0-3086-43d2-853c-489f9c42b0ab?source=cve