What the vulnerability does
01Description
The WP User Frontend Pro plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the upload_files() function in all versions up to, and including, 4.1.3. This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible. Please note that this requires the 'Private Message' module to be enabled and the Business version of the PRO software to be in use.
Explanation of Vulnerability in Simple Terms
02Summary
WP User Frontend Pro versions up to 4.1.3 do not properly validate file uploads, allowing authenticated users to upload arbitrary files to the site. An attacker with a low-privilege account can upload malicious files, including PHP scripts, to execute code on the server. This affects confidentiality, integrity, and availability of the site.
What an attacker can do
03Attacker Capabilities
Upload and execute arbitrary files, including PHP code, on the site server.
Potential impact on your site
04Site Impact
Attackers with basic user accounts can run malicious code on your site, potentially stealing data, modifying content, or taking over the site.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account (e.g., subscriber or contributor role).
Key dates
06Disclosure timeline
June 5, 2025
CVE published
April 8, 2026
Record updated
