Vulnerability Intelligence Report
User Registration Advanced Fields <= 1.6.20 - Unauthenticated Arbitrary File Upload
CVE-2026-4882
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.
No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
Exploitability:3.9
Impact Score:5.9
EPSS Probability:0.65%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-434 ↗CWE-434 Unrestricted Upload of File with Dangerous Type
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| WPEverest | User Registration Advanced Fields | 0 <= 1.6.20 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.653%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Wordfence · Vendor · USA |
| Reserved | 2026-03-26T08:01:39 |
| Published | 2026-05-02T04:27:46 |
| Last Updated | 2026-05-04T13:33:39 |
Community Chatter & Buzz