What is CVE-2026-4160?

CVE-2026-4160 is a medium-severity vulnerability in Techjewel Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.3/10. Published 2026-04-16.

How severe is CVE-2026-4160?

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

Auth bypass in Techjewel Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder

CVE-2026-4160

The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plugin for WordPress is vulnerable to Insecure Direct Object Reference via the 'submission_id' parameter in versions up to, and including, 6.1.21. T…

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.000 (6.1th percentile) — read the EPSS interpretation.

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.

Affected products

Techjewel Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder — versions 6.1.21

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

Frequently asked questions

What is CVE-2026-4160?: CVE-2026-4160 is a medium-severity vulnerability in Techjewel Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.3/10. Published 2026-04-16.
How severe is CVE-2026-4160?: Medium severity. CVSS v3 base score is 5.3 out of 10.