vulnerability

WordPress Plugin: nmedia-user-file-uploader: CVE-2021-4365: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Severity
6
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:N)
Published
Jul 12, 2021
Added
May 15, 2025
Modified
Apr 30, 2026

Description

The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated Stored Cross-Site Scripting in versions up to, and including, 18.2. This is due to lacking authentication protections and santisation all on the wpfm_edit_file_title_desc AJAX action. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Solution

nmedia-user-file-uploader-plugin-cve-2021-4365
Title
Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.