CVE-2026-4882

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

CVSS 9.8 CRITICALEPSS 0.7%CWE-434

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 Fields

public PoCs found — 1

githubgithub.com/xShadow-Here/CVE-2026-4882★ 0

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References

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