Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.54 and 9.6.0-alpha.43, an attacker can subscribe to LiveQuery with a watch parameter targeting a protected field. Although the protected field value is properly stripped from event payloads, the presence or absence of update events reveals whether the protected field changed, creating a binary oracle. For boolean protected fields, the timing of change events is equivalent to knowing the field value. This issue has been patched in versions 8.6.54 and 9.6.0-alpha.43.

Project Subscriptions

No data.

Advisories
Source ID Title
Github GHSA Github GHSA GHSA-qpc3-fg4j-8hgm Parse Server has a protected field change detection oracle via LiveQuery watch parameter
Fixes

Solution

No solution given by the vendor.


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 8.6.54 and 9.6.0-alpha.43, an attacker can subscribe to LiveQuery with a watch parameter targeting a protected field. Although the protected field value is properly stripped from event payloads, the presence or absence of update events reveals whether the protected field changed, creating a binary oracle. For boolean protected fields, the timing of change events is equivalent to knowing the field value. This issue has been patched in versions 8.6.54 and 9.6.0-alpha.43.
Title Parse Server: Protected field change detection oracle via LiveQuery watch parameter
Weaknesses CWE-203
References
Metrics cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-24T18:16:35.414Z

Reserved: 2026-03-19T18:45:22.434Z

Link: CVE-2026-33429

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-24T19:16:53.883

Modified: 2026-03-24T19:16:53.883

Link: CVE-2026-33429

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses