CVE-2025-4334
Simple User Registration <= 6.3 - Unauthenticated Privilege Escalation
- Published
- Jun 26, 2025
- Updated
- Apr 8, 2026
- Assigning CNA
- Wordfence
- Evidence observed
- Aug 8, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLow · next 30 days
- Percentile
- 85.0%
- Model date
- Oct 15, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
http/cves/2025/CVE-2025-4334.yaml
Nuclei TemplatesDeclared conditions
- network: http($.protocol_keys)
- verification: dsl($.matchers[*].type)
- CVE-2025-4334Exploit
Proof-of-concept exploit for CVE-2025-4334, a privilege escalation vulnerability in the Simple User Registration WordPress plugin (<= 6.3), allowing unauthenticated attackers to create administrator accounts.
Responsible use
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