Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.53 and 9.6.0-alpha.42, Parse Server's LiveQuery WebSocket interface does not enforce Class-Level Permission (CLP) pointer permissions (readUserFields and pointerFields). Any authenticated user can subscribe to LiveQuery events and receive real-time updates for all objects in classes protected by pointer permissions, regardless of whether the pointer fields on those objects point to the subscribing user. This bypasses the intended read access control, allowing unauthorized access to potentially sensitive data that is correctly restricted via the REST API. This issue has been patched in versions 8.6.53 and 9.6.0-alpha.42.

Project Subscriptions

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-fph2-r4qg-9576 Parse Server's LiveQuery bypasses CLP pointer permission enforcement
Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Tue, 24 Mar 2026 18:30:00 +0000

Type Values Removed Values Added
Description Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.53 and 9.6.0-alpha.42, Parse Server's LiveQuery WebSocket interface does not enforce Class-Level Permission (CLP) pointer permissions (readUserFields and pointerFields). Any authenticated user can subscribe to LiveQuery events and receive real-time updates for all objects in classes protected by pointer permissions, regardless of whether the pointer fields on those objects point to the subscribing user. This bypasses the intended read access control, allowing unauthorized access to potentially sensitive data that is correctly restricted via the REST API. This issue has been patched in versions 8.6.53 and 9.6.0-alpha.42.
Title Parse Server: LiveQuery bypasses CLP pointer permission enforcement
Weaknesses CWE-863
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-24T18:14:30.444Z

Reserved: 2026-03-19T18:45:22.432Z

Link: CVE-2026-33421

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-24T19:16:53.713

Modified: 2026-03-24T19:16:53.713

Link: CVE-2026-33421

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses