Medium 5.3Published Apr 16, 2026

CVE-2026-4160Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder <= 6.1.21 - Insecure Direct Object Reference in Stripe SCA Confirmation to Unauthenticated Payment Status Modification

Updated under an hour ago (Oct 26, 2026, 6:40 AM ET)

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It affects techjewel Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for techjewel Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder

Exploited in the last 30 days

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. This is due to missing authorization and ownership validation on a user controlled key in the Stripe SCA confirmation AJAX endpoint. This makes it possible for unauthenticated attackers to modify payment status of targeted pending submissions (for example, setting the status to "failed").

CVSS: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness (CWE): CWE-639
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Wordfence
NVD analysis: Deferred
Record last updated: Apr 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

techjewel Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder techjewel:fluent_forms_customizable_contact_forms_survey_quiz_and_conversational_form_builder (from the name)	6.1.21	CNA record

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/154fc656-3a33-4783-a941-10bb848244b3?source=cve
https://plugins.trac.wordpress.org/changeset/3496638/fluentform

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.