Vulnerability Report

CVE-2026-4882

RCE

Title: Arbitrary File Upload in User Registration Advanced Fields plugin

Arbitrary File Upload

Proof Of Concept

PoC Available for CVE-2026-4882

CWE Category CWE-434

Published Date May 02, 2026

Modified Date May 05, 2026

Exploit Status Available

Score 9.8 CVSS v3.1

Exploit Probability (EPSS)

0.65%

Vulnerability Summary

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.

Impacted Vendors

Analysis in Progress...

Reference Links

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

CVSS v3.1

Source Entity [email protected]

Severity CRITICAL

9.8

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-4882 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/xShadow-Here/CVE-2026-4882

View Code

May 05, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.