CVE-2026-16256

CRITICALCVSS 9.8/10EPSS 0.15%

Last modified

CVE-2026-16256 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.15% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
9.8/10

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

EPSS Probability
0.15%

4.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
UnknownPOUCO Import Users<= 1.0.0

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-16256?
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.
How severe is CVE-2026-16256?
CVE-2026-16256 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.15% probability of exploitation in the next 30 days.
How do I fix CVE-2026-16256?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST