Executive Summary

CVE-2026-49107 is a critical unauthenticated PHP Object Injection vulnerability found in the WordPress Thrive Apprentice Plugin versions prior to 10.8.10.2.

This vulnerability allows attackers to inject malicious PHP objects without needing any prior authentication, potentially enabling them to execute arbitrary code, perform SQL injection, path traversal, denial of service, and other harmful actions if a suitable Property-Oriented Programming (POP) chain exists.

Because it is unauthenticated and has a high severity score of 9.8, it is highly likely to be targeted in widespread attacks affecting many websites.

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Impact Analysis

Exploitation of this vulnerability can lead to severe impacts including remote code execution, unauthorized database access through SQL injection, unauthorized file system access via path traversal, and denial of service conditions.

These impacts can compromise the confidentiality, integrity, and availability of your website and its data, potentially leading to data breaches, service outages, and loss of control over your system.

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Detection Guidance

The vulnerability affects WordPress sites running the Thrive Apprentice plugin versions prior to 10.8.10.2 and is exploitable without authentication. Detection involves monitoring for exploit attempts targeting this plugin, especially those attempting PHP Object Injection payloads.

While no specific detection commands are provided, you can monitor web server logs for suspicious requests targeting the Thrive Apprentice plugin paths or unusual POST requests that may contain serialized PHP objects.

Additionally, applying Patchstack's mitigation rule can help block attack attempts until the plugin is updated.

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Mitigation Strategies

Immediate mitigation steps include updating the Thrive Apprentice plugin to version 10.8.10.2 or later, which contains the fix for this PHP Object Injection vulnerability.

Until the update can be applied, it is recommended to implement the mitigation rule provided by Patchstack to block attack attempts targeting this vulnerability.

Because the vulnerability is unauthenticated and critical (CVSS 9.8), prompt action is essential to prevent potential code execution, SQL injection, path traversal, denial of service, and other malicious activities.

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Compliance Impact

The vulnerability allows unauthenticated attackers to perform critical actions such as code injection, SQL injection, path traversal, and denial of service. Such exploits can lead to unauthorized access, data breaches, and service disruptions.

These consequences can negatively impact compliance with common standards and regulations like GDPR and HIPAA, which require protection of personal and sensitive data, ensuring data integrity, confidentiality, and availability.

Failure to mitigate this vulnerability promptly could result in violations of these regulations due to potential data exposure or service compromise.

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