CVE-2026-16256Network attack vector

Unauthenticated site takeover via trusted role input

Published Aug 2, 2026 · Updated Aug 2, 2026

Privilege escalation in POUCO Import Users 1.0.0 and earlier allows remote attackers to create an administrator account via AJAX. Unauthenticated account-management handlers omit capability and nonce checks, then apply an attacker-supplied role value without authorization. No authentication or user interaction is required, and the resulting administrator account grants full control of the WordPress site.

CVSS severity9.8
Critical
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in POUCO Import Users 1.0.0 and earlier allows remote attackers to create an administrator account via AJAX. Unauthenticated account-management handlers omit capability and nonce checks, then apply an attacker-supplied role value without authorization. No authentication or user interaction is required, and the resulting administrator account grants full control of the WordPress site.

The record

CVE
CVE-2026-16256
Published
Aug 2, 2026
Updated
Aug 2, 2026
Vendor
POUCO Agency
Product
POUCO Import Users
Classifications
CWE-269, T1136, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

POUCO Agency · POUCO Import Usersversion=0 <=1.0.0

Published CVSS scores

9.8Positive TechnologiesCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1136Create Account
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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