Unauthenticated PHP Object Injection in Splendour

Executive Summary

This is an unauthenticated PHP Object Injection vulnerability in the Splendour WordPress theme versions 1.23 or lower. It allows attackers to manipulate how the website processes data, potentially executing harmful actions on the server without needing authentication.

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Detection Guidance

Detecting this vulnerability requires checking for the Splendour theme version 1.23 or lower. Inspect WordPress installations for the theme and verify its version. No specific commands are provided in the context, but monitoring for unusual server behavior or unauthorized actions may indicate exploitation.

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Impact Analysis

The vulnerability could allow attackers to take control of your website, execute malicious code, or steal sensitive data. It has a high severity score (9.8) and could be used in mass-exploit campaigns targeting many websites.

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Compliance Impact

This vulnerability could lead to unauthorized data access or manipulation, which may violate GDPR's data protection requirements or HIPAA's safeguards for protected health information if exploited. Unpatched systems risk non-compliance due to potential breaches of confidentiality and integrity.

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Mitigation Strategies

Apply the Patchstack mitigation rule to block attacks until an official patch is released. Consider updating the theme to a patched version or contacting your hosting provider or developer for assistance.

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