Contributor PHP Object Injection in Avada

Executive Summary

The WordPress Avada Theme, versions 3.15.3 and below, contains a PHP Object Injection vulnerability (CVE-2026-12256). This flaw allows attackers to inject malicious PHP objects if a suitable POP (Property Oriented Programming) chain exists.

Exploitation of this vulnerability can lead to various malicious activities such as code injection, SQL injection, path traversal, and denial of service.

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Impact Analysis

This vulnerability can have severe impacts including unauthorized code execution, database compromise through SQL injection, unauthorized file system access via path traversal, and service disruption through denial of service attacks.

Given its high CVSS score of 8.8, it represents a significant security risk and could be exploited in widespread attacks targeting thousands of websites using the vulnerable Avada theme.

Immediate mitigation is necessary by updating the theme to version 3.15.4 or later or applying the provided mitigation rules.

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Compliance Impact

The vulnerability in the WordPress Avada Theme (versions 3.15.3 and below) allows attackers to perform code injection, SQL injection, path traversal, denial of service, and other malicious activities. Such exploits can lead to unauthorized access, data breaches, and disruption of services.

These security risks can impact compliance with common standards and regulations like GDPR and HIPAA, which require protection of personal and sensitive data, maintaining data integrity, and ensuring availability of services. Failure to mitigate this vulnerability could result in non-compliance due to potential data exposure or service interruptions.

Immediate action, such as updating the theme to version 3.15.4 or later or applying mitigation rules, is necessary to reduce the risk and help maintain compliance with these regulations.

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Mitigation Strategies

Immediate action is required to mitigate the risk posed by the PHP Object Injection vulnerability in Avada Theme versions 3.15.3 and below.

• Update the Avada theme to version 3.15.4 or later.
• Alternatively, apply the mitigation rule provided by Patchstack.

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