Stored SSRF in Greenshift WordPress Plugin

Executive Summary

The Greenshift WordPress plugin before version 13.2.0 has a Server-Side Request Forgery (SSRF) vulnerability. Users with contributor-level access or higher can supply a URL that the server fetches without proper validation. This allows them to make requests to arbitrary hosts and read the responses.

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Detection Guidance

Check if the Greenshift WordPress plugin version is below 13.2.0 by inspecting the plugin files or WordPress admin panel. Look for unauthorized server requests to external hosts in server logs or network traffic.

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Impact Analysis

An attacker could exploit this to access internal systems, exfiltrate sensitive data, or perform unauthorized actions on behalf of the server. It may also lead to further attacks if internal services are exposed.

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Compliance Impact

This vulnerability could lead to unauthorized data access or disclosure, violating GDPR's data protection principles or HIPAA's security requirements. Compliance may be compromised if sensitive data is exposed.

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Mitigation Strategies

Update the Greenshift plugin to version 13.2.0 or later immediately. If updating is not possible, restrict contributor-level and higher user roles to prevent them from exploiting the SSRF flaw.

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