CVE-2026-16256 — CRITICAL (9.8)

Vulnerability Description

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.

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-269

References

https://wpscan.com/vulnerability/c7442f47-7263-4cbb-8157-a4ac69953c95/

FAQ

What is CVE-2026-16256?

CVE-2026-16256 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 ...

How severe is CVE-2026-16256?

CVE-2026-16256 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-16256?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.