Vulnerability · Published May 2, 2026 · Assigned by Wordfence
CVE-2026-4882User Registration Advanced Fields <= 1.6.20 - Unauthenticated Arbitrary File Upload
Critical 9.8
In plain English
A critical-severity unrestricted file upload in User Registration Advanced Fields from WPEverest. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 51% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WPEverest | User Registration Advanced Fields | 0 – through 1.6.20 |
Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H