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CVE-2025-6464: PHP Object Injection Vulnerability in Forminator Forms WordPress Plugin

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Overview

The Forminator Forms plugin for WordPress, a popular tool for creating various types of forms, is found to possess a critical vulnerability that could potentially lead to a system compromise or data leakage. The vulnerability, identified as CVE-2025-6464, affects all versions up to and including 1.44.2. This report lays out the details of this vulnerability, its potential impact, and the steps required for mitigation.

Vulnerability Summary

CVE ID: CVE-2025-6464
Severity: High (7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise and potential data leakage

Affected Products

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Product | Affected Versions

Forminator Forms Plugin for WordPress | Up to and including 1.44.2

How the Exploit Works

The vulnerability exists due to the unsafe deserialization of untrusted input in the ‘entry_delete_upload_files’ function. An attacker can exploit this by injecting a malicious PHP Object through a PHAR file. The deserialization occurs when a form submission is deleted, either by an Administrator or via auto-deletion determined by plugin settings. If a PHP Object-Oriented Programming (POP) chain is present in an additional plugin or theme installed on the target system, arbitrary actions such as file deletion, sensitive data retrieval, or code execution could be performed depending on the POP chain present.

Conceptual Example Code

The following is a conceptual example of how the vulnerability might be exploited. This is a sample HTTP request with a malicious payload.

POST /forminator_forms/delete HTTP/1.1
Host: target.example.com
Content-Type: application/php
{ "entry_delete_upload_files": "phar://path/to/malicious/file.phar" }

Mitigation

Users are advised to apply the vendor patch immediately. For temporary mitigation, users can employ a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) to monitor and block suspicious activities. However, these measures only offer temporary relief and do not address the root cause of the vulnerability.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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