CVE-2026-16256: Unknown Pouco Import Users

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

The POUCO Import Users WordPress plugin through 1.0.0 does not perform any capability or nonce checks on AJAX actions available to unauthenticated users that create and update WordPress accounts, and it trusts an attacker-supplied role value, allowing unauthenticated attackers to create a new administrator account and take over the site.

Affected products

• Unknown Pouco Import Users: up to and including 1.0.0

Published 2026-08-02. Last modified 2026-08-26.