CVE-2026-4882

CRITICAL 9.8

User Registration Advanced Fields <= 1.6.20 - Unauthenticated Arbitrary File Upload

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-434
Vendor	wpeverest
Product	user registration advanced fields
Published	May 2, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

WPEverest / User Registration Advanced Fields

0 ≤ 1.6.20

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/f2c6a377-216f-4d61-8fae-ec5bc2793cdf?source=cve wpuserregistration.com: https://wpuserregistration.com/features/advanced-fields/

Credits

Jude Nwadinobi