CRITICAL SeverityCVSS 3.19.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVE-2026-4882

Last updated May 02, 2026 · Published May 02, 2026

Description

The User Registration Advanced Fields plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'URAF_AJAX::method_upload' function in all versions up to, and including, 1.6.20. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. Note: The vulnerability can only be exploited if a "Profile Picture" field is added to the form.

Affected products

1 listed

WPEverest:User Registration Advanced Fields

Mappings

CWE

CWE-434

CAPEC

None listed.

Research

File upload security: validation, isolation, and scanningInsecure file uploads are still one of the fastest paths to RCE. Validate type and size, store outside the web…

Guides

Secure File Uploads in Node.jsValidation, scanning, storage isolation, and safe serving patterns.

Training