Executive Summary

CVE-2026-56055 is a high-priority PHP Object Injection vulnerability found in the WordPress RealHomes Theme versions 4.5.3 and earlier.

This vulnerability allows attackers to inject malicious PHP objects, which can lead to various attacks such as code injection, SQL injection, path traversal, and denial of service if a suitable Property-Oriented Programming (POP) chain exists.

It is classified under the OWASP Top 10 category A3: Injection and is actively targeted in mass-exploit campaigns, making it a significant threat to websites using the affected theme.

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Impact Analysis

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

Such impacts can compromise the confidentiality, integrity, and availability of your website and its data.

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Mitigation Strategies

Immediate action is required to mitigate the risk posed by the PHP Object Injection vulnerability in RealHomes Theme versions 4.5.3 and earlier.

• Update the RealHomes theme to version 4.5.4 or later.
• Apply the mitigation rule provided by Patchstack to block attacks until the update can be applied.

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Compliance Impact

The CVE-2026-56055 vulnerability in the RealHomes WordPress theme allows for PHP Object Injection, which can lead to code execution, SQL injection, path traversal, and denial of service attacks. Such exploitation could result in unauthorized access, data breaches, or service disruptions.

These outcomes can negatively impact compliance with common standards and regulations like GDPR and HIPAA, which require the protection of personal and sensitive data, as well as maintaining system integrity and availability.

Failure to address this vulnerability could lead to violations of these regulations due to potential data exposure or service interruptions.

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