The Contact Form Plugin by Fluent Forms for Quiz, Survey, and Drag & Drop WP Form Builder plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 5.1.15 via deserialization of untrusted input in the extractDynamicValues function. This makes it possible for authenticated attackers, with contributor-level access and above, to inject a PHP Object. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code. Successful exploitation requires the attacker to have "View Form" and "Manage Form" permissions, which must be explicitly set by an administrator. However, this requirement can be bypassed when this vulnerability is chained with CVE-2024-2771.
CVE-2024-4157 is a high severity with CVSS 7.5 Vulnerability issue affecting the Plugin Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder. It affects Versions up to 5.1.15 and is fixed in 5.1.16.
CVE-2024-4157 is tracked for the Plugin Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder as high severity with CVSS 7.5. The affected range is Versions up to 5.1.15. Update Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder to 5.1.16 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
fluentform
View on wordpress.org
|
| CVE | CVE-2024-4157 |
| Patched Versions |
5.1.16
|
| Affected Versions |
Versions up to 5.1.15
|
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 <= 5.1.16 - 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
Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder 5.1.16 - 6.1.1 - Authenticated (Subscriber+) PHP Object Injection To Arbitrary File Read
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