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CVE-2025-32569: Critical Deserialization of Untrusted Data Vulnerability in TableOn WordPress Plugin

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Overview

The CVE-2025-32569 is a deserialization of untrusted data vulnerability discovered in the TableOn – WordPress Posts Table Filterable plugin. This vulnerability poses a significant risk to WordPress websites running versions of the TableOn plugin up to and including 1.0.2. The severity of this vulnerability stems from its potential to grant unauthorized access to a system, potentially leading to system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-32569
Severity: Critical (9.8 CVSS)
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

TableOn – WordPress Posts Table Filterable | up to and including 1.0.2

How the Exploit Works

The vulnerability arises from the improper handling of data by the TableOn plugin. Specifically, the plugin fails to properly sanitize user input, which allows for the deserialization of untrusted data. Attackers can exploit this vulnerability by sending specially crafted requests to the affected websites. These requests contain malicious serialized objects that, when deserialized, can lead to code execution in the context of the application, potentially leading to a full system compromise.

Conceptual Example Code

Here is a conceptual example of how an attacker might exploit this vulnerability with an HTTP request:

POST /wp-admin/admin-ajax.php?action=tableon_save_settings HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"settings": "YToxOntzOjI6InR0IjtpOjE7fQ==..."
}

In this example, the “settings” parameter contains a base64 encoded serialized PHP object that, when deserialized, triggers the execution of malicious code.

Mitigation and Recommendations

Organizations are recommended to immediately apply the vendor patch to remove the vulnerability. If a patch cannot be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation. Regularly updating and patching software is a key part of maintaining secure systems and protecting against vulnerabilities such as CVE-2025-32569.

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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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