Authorization Bypass in Participants Database Plugin

Executive Summary

This vulnerability is an Authorization Bypass Through User-Controlled Key issue in the Participants Database WordPress plugin. It allows attackers with low-level access, like Contributors or Developers, to manipulate IDs in URLs to access or expose data belonging to other users. This is due to incorrectly configured access control security levels.

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Detection Guidance

Check for unauthorized data access by monitoring URL parameters for ID manipulation attempts. Review server logs for unusual access patterns to sensitive endpoints. Inspect user roles with low privileges attempting to access higher-level data.

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Impact Analysis

An attacker could exploit this to access or expose sensitive data of other users, such as personal information or records. This could lead to privacy breaches or unauthorized data exposure, depending on the data stored in the plugin.

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Compliance Impact

This vulnerability could lead to unauthorized access to personal data, violating GDPR and HIPAA requirements for data protection and access controls. Non-compliance may result in legal penalties or reputational damage.

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Mitigation Strategies

Restrict user roles to the minimum required permissions. Implement additional access controls to validate user requests beyond role checks. Monitor for suspicious activity and consider disabling the plugin until an official patch is released.

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