The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated Arbitrary File Download in versions up to, and including, 18.2. This is due to lacking authentication protections, capability checks, and sanitization, all on the wpfm_file_meta_update AJAX action. This makes it possible for unauthenticated attackers to download arbitrary files on the site, potentially leading to site takeover.
CVE-2021-4356 is a critical severity with CVSS 9.0 Vulnerability issue affecting the Plugin Frontend File Manager Plugin. It affects Versions before 18.3 and is fixed in 18.3.
CVE-2021-4356 is tracked for the Plugin Frontend File Manager Plugin as critical severity with CVSS 9.0. 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.
| Software Type | Plugin |
|---|---|
| Software Slug |
nmedia-user-file-uploader
View on wordpress.org
|
| CVE | CVE-2021-4356 |
| 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 <= 18.2 - Authenticated Settings Change leading to Arbitrary File Upload
Frontend File Manager Plugin <= 22.5 - Authenticated (Editor+) Directory Traversal
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 <= 23.4 - Authenticated (Subscriber+) Arbitrary File Deletion
Frontend File Manager Plugin <= 23.5 - Missing Authorization to Unauthenticated Arbitrary File Sharing via 'file_id' Parameter
Frontend File Manager <= 21.5 - Missing Authorization to Unauthenticated Arbitrary Post Deletion
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