The Fluent Forms plugin for WordPress is vulnerable to Arbitrary File Read in versions up to and including 6.2.1. This is due to insufficient path validation in the getAttachments() method of EmailNotificationActions, which resolves attacker-supplied file-upload URLs into filesystem paths without verifying that the resolved path stays inside the WordPress uploads directory: a strpos() prefix check on the raw URL can be bypassed with traversal sequences, wp_normalize_path() does not resolve ".\..\" segments, and file_exists() then resolves them at the kernel level. This makes it possible for authenticated attackers with administrator access to read arbitrary files readable by the web-server user — including wp-config.php with its database credentials and authentication salts — by submitting a form whose admin notification is configured to attach a file-upload field and supplying a crafted URL of the shape <upload_baseurl>/../../<target> as the file-field value. The resolved file is attached to the outbound admin-notification email via wp_mail(). While the email can be triggered by unauthenticated users, the email recipient is not user-controlled.
CVE-2026-6344 is a medium severity with CVSS 4.9 Vulnerability issue affecting the Plugin Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder. It affects Versions up to 6.2.1 and is fixed in 6.2.2.
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CVE-2026-6344 is tracked for the Plugin Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder as medium severity with CVSS 4.9. The affected range is Versions up to 6.2.1. Update Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder to 6.2.2 or newer where that version is compatible with the site.
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Inventory the installed Plugin package and compare its version with Versions up to 6.2.1.
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| Software Type | Plugin |
|---|---|
| Software Slug |
fluentform
View on wordpress.org
|
| CVE | CVE-2026-6344 |
| Patched Versions |
6.2.2
|
| Affected Versions |
Versions up to 6.2.1
|
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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