SendPress Newsletters Plugin Hardcoded Token Exposure

Executive Summary

The SendPress Newsletters WordPress plugin up to version 1.26.1.20 uses a hardcoded token to protect a logging endpoint instead of a unique per-site secret. This allows unauthenticated users to access the logs, which may contain recipient email addresses.

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Detection Guidance

Check if the SendPress plugin version 1.26.1.20 or below is installed. Inspect network traffic for requests to the logging endpoint using the hardcoded token. Look for unauthorized access to logs containing recipient email addresses.

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Impact Analysis

Unauthenticated attackers could read sensitive data like recipient email addresses from the plugin's logs. This could lead to privacy breaches, spam targeting, or phishing attempts using exposed email addresses.

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Compliance Impact

This vulnerability likely violates GDPR and HIPAA due to unauthorized access to personal data (email addresses). It could result in non-compliance penalties, data breach notifications, and reputational damage for affected organizations.

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Mitigation Strategies

Update the SendPress plugin to the latest version if available. If no update exists, consider disabling the plugin until a patch is released. Restrict access to sensitive logs and monitor for unusual activity.

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