What is CVE-2026-106166?

CVE-2026-106166 is a medium-severity vulnerability in Nex-Forms, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.3/10. Published 2026-10-14.

How severe is CVE-2026-106166?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Nex-Forms

CVE-2026-106166

The NEX-Forms WordPress plugin before 9.3.1 does not perform any authorization, ownership or request-validation checks before updating stored form entries, allowing unauthenticated attackers to overwrite, permanently erase, reassign or append to any previously submitted form entry by referencing its sequential identifier.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2026-10-14 · last modified 2026-10-14.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

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

Nex-Forms

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

wpscan.com/vulnerability/aa33ce05-091d-4fef-b875-4fedb8b8fc9d/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-106166?: CVE-2026-106166 is a medium-severity vulnerability in Nex-Forms, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.3/10. Published 2026-10-14.
How severe is CVE-2026-106166?: Medium severity. CVSS v3 base score is 5.3 out of 10.