Export and Import Users and Customers - Broken Access Control (CVE-2023-3459)

Q: Am I affected by this vulnerability?

You are affected if your site runs Export and Import Users and Customers.

Q: How do I fix it?

Update Export and Import Users and Customers to the latest available version. Where the vendor has not yet published a fix, remove or disable the plugin until they do. Until you can update, Request / payload inspection (WAF) in Hack Halt ProSecure contains this class of attack at the request layer.

Q: What can an attacker actually do?

This is a Broken Access Control flaw. An attacker who exploits it can reach actions or data that should have been restricted to someone else.

CVE-2023-3459

Vulnerability CVE-2023-3459 PLUGIN export-and-import-users-and-customers HIGH

The Export and Import Users and Customers plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'hf_update_customer' function called via an AJAX action in versions up to, and including, 2.4.1. This makes it possible for authenticated attackers, with shop manager-level permissions to change user passwords and potentially take over administrator accounts.

CVE-2023-3459

HIGH CVSS 7.2 Published 2023-07-18 Updated 2026-06-17

AI Risk Elevated (74/100) Active Exploit: No strong signal Published Exploit: No public exploit references Priority: P3 Priority

Severity Band HIGH

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

Affected Components 2

Reference Links 3

AI Risk Engine Elevated (74/100)

Exploitability High

Active Exploitation No strong signal

Published Exploit Status No public exploit references

Threat Timeline

2023-07-18 CVE published and first recorded in the threat feed.
2026-06-17 Record updated with latest vulnerability metadata.
2026-04-09 AI technical context refreshed for mitigation and impact guidance.
Now Monitoring for follow-up changes, linked references, and new related CVEs.

AI Context

Machine-generated threat intelligence

AI Updated 167 days ago

AI enriched 167 days ago (2026-04-09 06:30 UTC)

Technical Summary

Potential Impact

Severity is HIGH (CVSS 7.2). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.

Exploitability Assessment

Exploitability is assessed as High based on remote code execution potential.

Primary risk drivers: remote code execution potential

Mitigation Recommendations

Validate affected product versions, prioritize patching, and monitor references for vendor remediation guidance. If immediate patching is not possible, apply compensating controls and limit exposure of vulnerable surfaces.

Detection & Monitoring

Track authentication anomalies, unexpected file writes, and suspicious plugin API activity around affected components.

Business Impact Lens

Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Affected Products

Export and Import Users and Customers PLUGIN · export-and-import-users-and-customers Affected range not specified Fixed version not specified

Import Export Wordpress Users PLUGIN · import-export-wordpress-users Affected: <= 2.4.1 Fixed version not specified

References

What to do about this

Patch promptly The consequence is significant even where an attacker needs a foothold first.

Fix it

Update Export and Import Users and Customers to the latest available version.

Where the vendor has not published a fix yet, disable the plugin until they do.

Cannot update today? Request / payload inspection (WAF) in Hack Halt ProSecure blocks this class of attack before WordPress processes the request.

Inspect request parameters and bodies for injection, traversal and file-inclusion payloads, and refuse the request rather than logging it.

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Not sure if you are affected?

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