The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plugin for WordPress is vulnerable to PHP Object Injection in versions 5.1.16 to 6.1.1 via deserialization of untrusted input in the parseUserProperties function. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject a PHP Object. The additional presence of a POP chain allows attackers to read arbitrary files. If allow_url_include is enabled on the server, remote code execution is possible. While the vendor patched this issue in version 6.1.0, the patch caused a fatal error in the vulnerable code, due to a missing class import, so we consider 6.1.2 to be the most complete and best patched version.
CVE-2025-9260 is a medium severity with CVSS 6.5 Remote Code Execution issue affecting the Plugin Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder. It affects 5.1.16 through 6.1.1 and is fixed in 6.1.2.
CVE-2025-9260 is tracked for the Plugin Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder as medium severity with CVSS 6.5. The affected range is 5.1.16 through 6.1.1. Update Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder to 6.1.2 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
fluentform
View on wordpress.org
|
| CVE | CVE-2025-9260 |
| Patched Versions |
6.1.2
|
| Affected Versions |
5.1.16 through 6.1.1
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Contact Form Plugin by Fluent Forms for Quiz, Survey, and Drag & Drop WP Form Builder <= 5.1.16 - Missing Authorization to Settings Update and Limited Privilege Escalation
WP Fluent Forms < 3.6.67 - Stored Cross-Site Scripting
Contact Form Plugin by FluentForm <= 4.3.12 - CSV Injection
Contact Form Plugin by Fluent Forms for Quiz, Survey, and Drag & Drop WP Form Builder <= 5.1.15 - PHP Object Injection via extractDynamicValues
Contact Form Plugin by Fluent Forms for Quiz, Survey, and Drag & Drop WP Form Builder <= 5.1.16 - Missing Authorization to Setting Manipulation
Contact Form Plugin by Fluent Forms for Quiz, Survey, and Drag & Drop WP Form Builder <= 5.2.6 - Unauthenticated Stored Cross-Site Scripting via Form Subject
FluentForm <= 4.3.25 - Authenticated (Administrator+) SQL Injection
FluentForm <= 6.1.11 - Unauthenticated Arbitrary Shortcode Execution
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