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Winwar Media WordPress Email Marketing - Information Disclosure (CVE-2023-28421)

CVE-2023-28421

Vulnerability CVE-2023-28421 PLUGIN winwar-media-wordpress-email-marketing MEDIUM

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Winwar Media WordPress Email Marketing Plugin – WP Email Capture.This issue affects WordPress Email Marketing Plugin – WP Email Capture: from n/a through 3.10.

CVE-2023-28421

MEDIUM CVSS 5.3 Published 2023-12-21 Updated 2026-06-17
AI Risk Moderate (46/100) 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:N/UI:N/S:U/C:L/I:N/A:N
Affected Components 2
Reference Links 1
AI Risk Engine Moderate (46/100)
Exploitability Low
Active Exploitation No strong signal
Published Exploit Status No public exploit references

Threat Timeline

  1. 2023-12-21 CVE published and first recorded in the threat feed.
  2. 2026-06-17 Record updated with latest vulnerability metadata.
  3. 2026-04-09 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 175 days ago

AI enriched 175 days ago (2026-04-09 09:37 UTC)

Technical Summary

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Winwar Media WordPress Email Marketing Plugin – WP Email Capture.This issue affects WordPress Email Marketing Plugin – WP Email Capture: from n/a through 3.10.

Potential Impact

Severity is MEDIUM (CVSS 5.3). 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

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.

Wp Email Capture - Cross-Site Request Forgery (CSRF) (CVE-2025-68529) CVE-2025-68529 Published 2025-12-24 Wp Email Capture - Broken Access Control (CVE-2025-67578) CVE-2025-67578 Published 2025-12-09 Wp Email Capture - Cross-Site Request Forgery (CSRF) (CVE-2023-23724) CVE-2023-23724 Published 2023-05-23 Wp Email Capture - Cross-Site Scripting (XSS) (CVE-2023-23723) CVE-2023-23723 Published 2023-05-02

References

What to do about this

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

Fix it

Update Winwar Media WordPress Email Marketing to 3.11 or later.

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

Cannot update today? Restrict REST API in Hack Halt Pro blocks this class of attack before WordPress processes the request.

Require authentication for REST namespaces that do not need to be public, so the API cannot be used to enumerate content and accounts.

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Not sure if you are affected?

Scan your site to see whether it runs Winwar Media WordPress Email Marketing, 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.

Scan my site free See what Hack Halt does

Am I affected by this vulnerability?

You are affected if your site runs Winwar Media WordPress Email Marketing. Versions below 3.11 are vulnerable; that release and later are not.

How do I fix it?

Update Winwar Media WordPress Email Marketing to version 3.11 or later. That is the complete fix. Until you can update, Restrict REST API in Hack Halt Pro contains this class of attack at the request layer.

What can an attacker actually do?

This is a Information Disclosure flaw. An attacker who exploits it can read data they were never meant to see, which is often the first step in a larger attack.

WordPress security that blocks attacks before they land.

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