PowerSync Service is the server-side component of the PowerSync sync engine. In version 1.20.0, when using new sync streams with config.edition: 3, certain subquery filters were ignored when determining which data to sync to users. Depending on the sync stream configuration, this could result in authenticated users syncing data that should have been restricted. Only queries that gate synchronization using subqueries without partitioning the result set are affected. This vulnerability is fixed in 1.20.1.
History

Mon, 09 Mar 2026 22:45:00 +0000

Type Values Removed Values Added
Description PowerSync Service is the server-side component of the PowerSync sync engine. In version 1.20.0, when using new sync streams with config.edition: 3, certain subquery filters were ignored when determining which data to sync to users. Depending on the sync stream configuration, this could result in authenticated users syncing data that should have been restricted. Only queries that gate synchronization using subqueries without partitioning the result set are affected. This vulnerability is fixed in 1.20.1.
Title Some sync filters in PowerSync Service ignored using `config.edition: 3`
Weaknesses CWE-285
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-03-09T22:31:40.035Z

Updated: 2026-03-09T22:31:40.035Z

Reserved: 2026-03-06T00:04:56.698Z

Link: CVE-2026-30870

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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