Executive Summary

This vulnerability is a Deserialization of Untrusted Data issue in the rascals Vex software. It allows Object Injection, meaning that an attacker can manipulate serialized data to inject malicious objects when the software deserializes the data. This can lead to unexpected behavior or exploitation.

The affected versions of Vex are all versions before 1.2.9.

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Impact Analysis

Exploitation of this vulnerability can allow an attacker to inject malicious objects into the application, potentially leading to arbitrary code execution, data manipulation, or other unauthorized actions depending on how the application processes the injected objects.

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Compliance Impact

CVE-2026-25360 is a critical PHP Object Injection vulnerability that can lead to severe attacks such as remote code execution, SQL injection, and denial of service. Such attacks can compromise the confidentiality, integrity, and availability of data handled by affected systems.

While the provided information does not explicitly mention compliance with standards like GDPR or HIPAA, exploitation of this vulnerability could result in unauthorized access or data breaches, which would negatively impact compliance with these regulations.

Organizations using the vulnerable Vex Theme should promptly apply the patch to mitigate risks that could lead to violations of data protection and privacy requirements under common standards and regulations.

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Detection Guidance

The provided resources do not include specific commands or methods to detect the CVE-2026-25360 vulnerability on your network or system.

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Mitigation Strategies

To mitigate the CVE-2026-25360 vulnerability, you should immediately update the WordPress Vex Theme to version 1.2.9 or later, as this version contains the patch that fixes the PHP Object Injection issue.

Until you can apply the update, you can use mitigation rules provided by Patchstack that block attacks exploiting this vulnerability, offering rapid protection.

It is strongly advised to apply these mitigations promptly due to the critical risk level (CVSS score 8.8) and the expected widespread exploitation.

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