The Frontend File Manager plugin for WordPress is vulnerable to Authenticated Settings Change in versions up to, and including, 18.2. This is due to lacking capability checks and a security nonce, all on the wpfm_save_settings AJAX action. This makes it possible for subscriber-level attackers to edit the plugin settings, such as the allowed upload file types. This can lead to remote code execution through other vulnerabilities.
CVE-2021-4368 is a critical severity with CVSS 9.9 Remote Code Execution issue affecting the Plugin Frontend File Manager Plugin. It affects Versions before 18.3 and is fixed in 18.3.
Use the related hub and response guides to connect this CVE-2021-4368 report with patch validation, scanner checks, and site hardening work.
Open the grouped hub for related CVEs, affected ranges, severity mix, and patch coverage.
Check access, XML-RPC exposure, backup readiness, and monitoring after patching.
Use containment, evidence capture, remediation, and validation steps when exploit risk is high.
CVE-2021-4368 is tracked for the Plugin Frontend File Manager Plugin as critical severity with CVSS 9.9. The affected range is Versions before 18.3. Update Frontend File Manager Plugin to 18.3 or newer where that version is compatible with the site.
Search engines and operators need more than a title. This page exposes the identifier, affected range, patch evidence, and source coverage that make the vulnerability actionable.
This report has a CVE identifier, which makes it suitable for focused search and vulnerability triage workflows.
Affected version data gives operators a concrete comparison point against installed WordPress software.
A fixed version is present, so the page can answer update and remediation intent directly.
External references are available for source validation, advisory review, and incident notes.
Use these checks when converting this record into a patch ticket, incident note, or risk acceptance decision.
Inventory the installed Plugin package and compare its version with Versions before 18.3.
Confirm Frontend File Manager Plugin is updated to 18.3 or newer.
Review references and CVSS vector details for exploitability, authentication requirements, and exposure path.
After patching, re-run vulnerability monitoring and keep the related plugin or theme hub under review for follow-up CVEs.
| Software Type | Plugin |
|---|---|
| Software Slug |
nmedia-user-file-uploader
View on wordpress.org
|
| CVE | CVE-2021-4368 |
| Patched Versions |
18.3
|
| Affected Versions |
Versions before 18.3
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Frontend File Manager Plugin <= 22.5 - Authenticated (Editor+) Directory Traversal
Frontend File Manager <= 18.2 - Unauthenticated Arbitrary File Download
Frontend File Manager Plugin <= 21.2 - Cross-Site Request Forgery to File Upload
Frontend File Manager <= 21.2 - Authenticated (Subscriber+) Arbitrary File Upload
Frontend File Manager Plugin < 3.6 - Arbitrary File Upload
Frontend File Manager Plugin <= 23.6 - Authenticated (Subscriber+) Arbitrary File Deletion
Frontend File Manager <= 23.4 - Authenticated (Subscriber+) Arbitrary File Deletion
Frontend File Manager Plugin <= 23.5 - Missing Authorization to Unauthenticated Arbitrary File Sharing via 'file_id' Parameter
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