Fluent Forms <= 6.0.2 - Authenticated (Contributor+) Stored Cross-Site Scripting

6.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2025-3615
CVSS 6.4 (Medium)
Publicly Published April 16, 2025
Last Updated April 17, 2025
Researcher Asaf Mozes

Description

The Fluent Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the form-submission.js script in all versions up to, and including, 6.0.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.

References

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Vulnerability Details for Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder

Software Type Plugin
Software Slug fluentform (view on wordpress.org)
Patched? Yes
Remediation Update to version 6.0.3, or a newer patched version
Affected Version
  • <= 6.0.2
Patched Version
  • 6.0.3

Recent vulnerabilities in Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder

# Title CVE ID CVSS Researchers Date
1 Fluent Forms <= 6.2.11 - Unauthenticated Stored Cross-Site Scripting via Notification Smartcode Values CVE-2026-18146 7.2 Adrien Brunner August 12, 2026
2 Fluent Forms <= 6.2.8 - Reflected Cross-Site Scripting via 'param' CVE-2026-17571 6.1 Osvaldo Noe Gonzalez Del Rio (Os) July 31, 2026
3 Fluent Forms <= 6.2.8 - Unauthenticated Sensitive Information Exposure via Insecure Direct Object Reference and Weak Transaction Hash in 'transaction' Parameter CVE-2026-17567 5.3 ChinhNguyen July 30, 2026
4 Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder < 6.2.6 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2026-11881 6.4 Muni Nitish Kumar Yaddala July 30, 2026
5 Fluent Forms <= 6.2.7 - Unauthenticated Stored Cross-Site Scripting via Name Field Nested `password` Member CVE-2026-16655 7.2 daroo July 28, 2026
6 Fluent Forms <= 6.2.1 - Incorrect Authorization to Authenticated (Subscriber+) Arbitrary Subscription Cancellation via 'subscription_id' CVE-2026-5069 5.4 Fernando Mecozzi July 9, 2026
7 Fluent Forms <= 6.2.0 - Authenticated (Subscriber+) Authorization Bypass via 'table' Parameter CVE-2026-5395 8.2 Sander Horsman May 13, 2026
8 Fluent Forms <= 6.1.21 - Authenticated (Subscriber+) Authorization Bypass via 'form_id' Parameter CVE-2026-5396 8.2 Sander Horsman May 13, 2026
9 Fluent Forms <= 6.2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'permission_message' Shortcode Attribute CVE-2026-6828 6.4 zaim May 12, 2026
10 Fluent Forms <= 6.2.1 - Authenticated (Administrator+) Arbitrary File Read via Path Traversal in Email Attachment CVE-2026-6344 4.9 Niv Kochan May 5, 2026

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