What is CVE-2026-4882?

CVE-2026-4882 is a critical-severity vulnerability in Wpeverest User Registration Advanced Fields, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-05-02.

How severe is CVE-2026-4882?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2026-4882 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Wpeverest User Registration Advanced Fields

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 p…

Vulnerability class: Unrestricted File Upload

EPSS: 0.001 (25.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: 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 — versions 0

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

xShadow-Here/CVE-2026-4882

References

Frequently asked questions

What is CVE-2026-4882?: CVE-2026-4882 is a critical-severity vulnerability in Wpeverest User Registration Advanced Fields, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-05-02.
How severe is CVE-2026-4882?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2026-4882 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.