CVE-2026-30870
Published: Mar 9, 2026
Modified: Mar 10, 2026
CVSS v3.1
6.5
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.
| Vendor | Product | Versions |
|---|---|---|
powersync-ja | powersync-service | affected < 1.20.1 |
@powersync | service-core | affected < 1.20.1 |
@powersync | service-sync-rules | affected < 0.33.0 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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