CVE-2026-30962: Parse Server Protected Fields Bypass Vulnerability

Background

Parse Server is an open-source backend framework that enables developers to build applications with a robust server-side infrastructure. It provides features such as data storage, user authentication, and real-time notifications. However, it has a vulnerability that allows authenticated users to bypass protections on sensitive fields, potentially exposing confidential data.

Vulnerability Detail

The vulnerability arises from inadequate validation of protected fields in Parse Server. The system only checks top-level query keys, allowing attackers to exploit logical operators to access protected fields. This flaw can lead to unauthorized data exposure, as any authenticated user can manipulate queries to retrieve sensitive information.

npm install parse-server@9.10.5

Workaround

As a temporary measure, implement a 'beforeFind' trigger in your Parse Server application to manually inspect queries for references to protected fields within logical operators. Here is an example of how to set up this trigger:

Parse.Cloud.beforeFind('YourClassName', async (request) => {
  const query = request.query;
  // Inspect the query for protected fields
  if (query.containsProtectedField()) {
    throw new Parse.Error(Parse.Error.OPERATION_FORBIDDEN, 'Access to protected fields is not allowed.');
  }
});

Conclusion

In summary, CVE-2026-30962 is a significant vulnerability in Parse Server that allows unauthorized access to protected fields through logical query operators. It is crucial to update to the latest patched versions or implement workarounds to safeguard sensitive data.

See every vulnerability recorded for parse-server →

FAQ