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Vulnerabilities and Security Researches

Contact Form Plugin by Fluent Forms for Quiz, Survey, and Drag & Drop WP Form Builder, CVE-2025-9260

CVE, Research URL

CVE-2025-9260

Published on
Sep 03, 2025
Research Description
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
Affected versions
max 6.1.2.
Status
vulnerable