Deserialization of Untrusted Data in VK Google Job Posting Manager

Executive Summary

This is a PHP Object Injection vulnerability in the WordPress VK Google Job Posting Manager Plugin affecting versions 1.3.1 and earlier. It allows attackers with contributor or developer-level access to inject malicious objects during deserialization, potentially leading to remote code execution or data manipulation on the server.

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Detection Guidance

To detect this vulnerability, check if the VK Google Job Posting Manager plugin version is 1.3.1 or earlier. Use commands like 'wp plugin list' in WordPress or inspect the plugin directory for version details. Patchstack also provides a mitigation rule to block attacks until the plugin is updated.

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Impact Analysis

An attacker could exploit this to manipulate site data, execute harmful server actions, or take control of your website. Since the plugin is used on many sites, mass-exploit campaigns could target thousands of installations, increasing the risk of widespread compromise.

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Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's integrity and confidentiality requirements or HIPAA's safeguards for protected health information. Non-compliance risks include legal penalties, reputational damage, and loss of trust.

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Mitigation Strategies

Update the VK Google Job Posting Manager plugin to version 1.3.2 or later immediately to patch the vulnerability. Apply the mitigation rule provided by Patchstack to block attacks until the update is completed.

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