CVE-2025-9260 Details
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
A PHP Object Injection vulnerability has been identified in the Fluent Forms plugin for WordPress, specifically in versions 5.1.16 prior to 6.1.1. The issue arises from the deserialization of untrusted input in the 'parseUserProperties' function, allowing authenticated attackers with Subscriber-level access and above to inject PHP objects. This vulnerability is compounded by the presence of a Property-Oriented Programming (POP) chain, which enables the reading of arbitrary files. If 'allow_url_include' is enabled on the server, remote code execution could be achieved. Although the vendor released a patch for this vulnerability in version 6.1.0, the patch introduced a fatal error due to a missing class import. Therefore, version 6.1.2 is considered the most complete and effective patched version.
Users are advised to update the Fluent Forms plugin to version 6.1.2 or a newer patched version.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 3, 2025CISA-ADP
Assessed Sep 3, 2025References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-502 | Deserialization of Untrusted Data | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Fluent Forms | All versions |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Sep 3, 2025 | New CVE Received | [email protected] |