Unauthenticated PHP Object Injection in WineShop

Executive Summary

This is an unauthenticated PHP Object Injection vulnerability affecting WineShop theme versions 3.20 or lower. Attackers can exploit it to manipulate site data and execute harmful actions on the server without needing authentication.

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Detection Guidance

Detecting this vulnerability requires checking for the presence of the WineShop theme version 3.20 or lower. Inspect your WordPress installation for the theme directory and verify the version in the style.css file. No specific commands are provided in the context, but manual inspection of the theme files is recommended.

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Impact Analysis

It allows attackers to take control of your website, modify data, or perform malicious actions remotely without any user interaction. The high CVSS score of 9.8 indicates severe risk of exploitation in mass campaigns.

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Compliance Impact

This vulnerability allows unauthenticated attackers to execute harmful actions on the server, potentially leading to unauthorized data access, modification, or deletion. Such breaches could violate GDPR (data protection) and HIPAA (health data privacy) by exposing sensitive user or patient information.

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Mitigation Strategies

Apply Patchstack's mitigation rule to block attacks until an official patch is released. Update the WineShop theme to the latest version if available. Seek assistance from a hosting provider or developer for further protection.

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