Deserialization of Untrusted Data in Paytium

Executive Summary

This is a PHP Object Injection vulnerability in the WordPress Paytium Plugin versions 5.0.5 and below. Attackers can exploit it to manipulate data processing and execute harmful actions on the server without authentication. The flaw has a CVSS score of 9.8, indicating high severity and risk of exploitation.

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Detection Guidance

Detecting this vulnerability requires checking if the Paytium plugin version 5.0.5 or below is installed. Inspect your WordPress plugins directory for the Paytium folder and verify the version in the plugin's main file. No specific commands are provided, but monitoring for unusual server activity or unauthorized access attempts may indicate exploitation.

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Impact Analysis

Attackers can exploit this to execute arbitrary code on your server, potentially taking control of your website or server. Even low-traffic sites are at risk. Immediate action like updating the plugin or applying mitigations is required to prevent exploitation.

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Mitigation Strategies

Immediately update the Paytium plugin to version 5.0.6 or later. If updating is not possible, apply the mitigation rule provided by Patchstack to block attacks until an update is available. Contact your hosting provider or web developer for assistance if needed.

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