Executive Summary

This vulnerability affects Parse Server, an open source backend for Node.js. Before versions 9.5.2-alpha.6 and 8.6.19, the system only validated protected fields at the top-level query keys. However, if a query constraint on a protected field was wrapped inside a logical operator, the validation was bypassed entirely. This means any authenticated user could query and extract values from protected fields that should have been restricted.

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Impact Analysis

The vulnerability allows authenticated users to access and extract data from protected fields that are supposed to be restricted. This can lead to unauthorized disclosure of sensitive information stored in those fields, potentially compromising data confidentiality and security in any Parse Server deployment using vulnerable versions.

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Compliance Impact

I don't know

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Detection Guidance

I don't know

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Mitigation Strategies

To mitigate this vulnerability, you should upgrade your Parse Server deployment to version 9.5.2-alpha.6 or later, or 8.6.19 or later, where the issue with validation of protected fields has been fixed.

All Parse Server deployments have default protected fields and are vulnerable prior to these versions, so applying the update is the immediate recommended step.

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