CVE-2025-4334: 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

critical Affects wp-registration (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published 2025-06-26; advisory modified 2026-08-11.

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

Package: wp-registration (WordPress plugin) WordPress
Affected versions: <=6.3
Fixed in: no fix recorded
Severity: critical CVSS 9.8
Exploitation: not on CISA KEV · EPSS 3% (85.2th percentile)
Published: 2025-06-26
Source: nvd

References

CWE-269

NVD record wp-registration (WordPress plugin) advisories

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Find out in one command. phpwarden checks your WordPress install against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

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# then
phpwarden wordpress /var/www/html

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