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Import and export users and customers - Security Vulnerability (CVE-2026-16542)

CVE-2026-16542

Vulnerability CVE-2026-16542 PLUGIN import-and-export-users-and-customers MEDIUM

The Import and export users and customers WordPress plugin before 2.4.5 does not validate a user-supplied URL before requesting it server-side during a CSV import, allowing high-privileged users to perform Server-Side Request Forgery attacks.

CVE-2026-16542

MEDIUM CVSS 4.1 Published 2026-09-20 Updated 2026-09-21
AI Risk Moderate (37/100) Active Exploit: No strong signal Published Exploit: No public exploit references Priority: P4 Planned
Severity Band MEDIUM
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N
Affected Components 1
Reference Links 1
AI Risk Engine Moderate (37/100)
Exploitability Low
Active Exploitation No strong signal
Published Exploit Status No public exploit references

Threat Timeline

  1. 2026-09-20 CVE published and first recorded in the threat feed.
  2. 2026-09-21 Record updated with latest vulnerability metadata.
  3. 2026-09-22 AI technical context refreshed for mitigation and impact guidance.
  4. Now Monitoring for follow-up changes, linked references, and new related CVEs.

AI Context

Machine-generated threat intelligence

AI Updated 51 days ago

AI enriched 51 days ago (2026-09-22 18:35 UTC)

Technical Summary

The Import and export users and customers WordPress plugin before 2.4.5 does not validate a user-supplied URL before requesting it server-side during a CSV import, allowing high-privileged users to perform Server-Side Request Forgery attacks.

Potential Impact

Severity is MEDIUM (CVSS 4.1). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.

Exploitability Assessment

Exploitability is assessed as Low based on severity and technical exposure profile.

Primary risk drivers: severity and technical exposure profile

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

AI risk score 37/100 (Moderate, Low) with priority P4 Planned. Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Related Vulnerabilities

Browse All Threats

Newest linked vulnerabilities to keep visitors exploring adjacent CVE coverage.

Import and export users and customers - Security Vulnerability (CVE-2026-120554) CVE-2026-120554 Published 2026-11-04 New Import and export users and customers - Security Vulnerability (CVE-2026-104757) CVE-2026-104757 Published 2026-10-06 Import and export users and customers - Security Vulnerability (CVE-2026-94178) CVE-2026-94178 Published 2026-09-30 Import and export users and customers - Security Vulnerability (CVE-2026-86583) CVE-2026-86583 Published 2026-09-23 Import and export users and customers - Security Vulnerability (CVE-2026-92541) CVE-2026-92541 Published 2026-09-20 Import and export users and customers - Security Vulnerability (CVE-2026-92540) CVE-2026-92540 Published 2026-09-20

References

What to do about this

Patch on your next cycle Worth fixing, but not ahead of other work.

Fix it

Update Import and export users and customers to 2.4.5 or later.

That is the complete fix. Everything below is what protects you in the meantime.

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?

Scan your site to see whether it runs Import and export users and customers, and at which version.

Free, no installation, no account. It reads what your site already publishes, then tells you which plugins carry known vulnerabilities and what to do about each one.

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Am I affected by this vulnerability?

You are affected if your site runs Import and export users and customers. Versions below 2.4.5 are vulnerable; that release and later are not.

How do I fix it?

Update Import and export users and customers to version 2.4.5 or later. That is the complete fix. Until you can update, Request / payload inspection (WAF) in Hack Halt ProSecure contains this class of attack at the request layer.

What can an attacker actually do?

This is a Server-Side Request Forgery (SSRF) flaw. An attacker who exploits it can make the server itself fetch a URL of their choosing, reaching internal services.

WordPress security that blocks attacks before they land.

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