What is CVE-2026-123751?

CVE-2026-123751 is a critical-severity vulnerability in Wp Duplicate, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-11-09.

How severe is CVE-2026-123751?

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

Arbitrary file upload in Wp Duplicate

CVE-2026-123751

The WP Duplicate WordPress plugin through 1.1.11 does not properly verify a request authentication value and does not validate the path or type of uploaded files, making it possible for unauthenticated attackers to write arbitrary files to the server and achieve remote code execution. This vulnerability is being actively exploited in the wild.

Vulnerability class: Unrestricted File Upload

Published 2026-11-09 · last modified 2026-11-09.

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.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Wp Duplicate

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

wpscan.com/vulnerability/3a3556f0-fc36-4f68-b826-406a7b4c3f9e/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-123751?: CVE-2026-123751 is a critical-severity vulnerability in Wp Duplicate, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-11-09.
How severe is CVE-2026-123751?: Critical severity. CVSS v3 base score is 9.8 out of 10.