CVE-2026-4882: critical vulnerability in WPEverest User Registration Advanced Fields
User Registration Advanced Fields <= 1.6.20 - Unauthenticated Arbitrary File Upload
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
70Vexday Risk Score
Prioritize patching. It exploitation observed by VulnCheck and has a public proof of concept.
ssvc Actcvss 9.8epss 0.7%
from disclosure to weapon14 days
Published on NVDMay 2
1st PoC+14d
VulnCheck+164d
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
WPEverest · User Registration Advanced Fieldspublic PoCs found — 2
githubgithub.com/xShadow-Here/CVE-2026-4882★ 0vulncheckvulncheck.com/xdb/73ddab0d55cfunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.