Unauthenticated Broken Access Control in User Registration

Executive Summary

This is an Unauthenticated Broken Access Control vulnerability in the User Registration plugin versions 5.2.6 and below. It allows unauthorized users to perform actions they should not be permitted to do due to improper access restrictions.

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Detection Guidance

To detect this vulnerability, check if the User Registration plugin version is 5.2.6 or lower. Inspect network traffic for unauthenticated access attempts to user registration endpoints. Review server logs for unusual registration patterns or unauthorized modifications to user roles.

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Impact Analysis

An attacker could exploit this to manipulate user registration processes without authentication. This may lead to unauthorized account creation, privilege escalation, or other unintended actions affecting the integrity of the system.

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Compliance Impact

This vulnerability allows unauthenticated users to manipulate access controls in the User Registration plugin, potentially leading to unauthorized data exposure or modification. For GDPR, this could result in violations of data integrity and access control requirements under Articles 5 and 32. For HIPAA, it may compromise protected health information security under the Security Rule. The CVSS score indicates a moderate risk with potential for unauthorized impact.

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Mitigation Strategies

Update User Registration plugin to the latest version beyond 5.2.6 to fix the unauthenticated broken access control issue.

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