Detections
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SCA: security update for @powersync/service-core, @powersync/service-sync-rules (GHSA-q6wc-xx4m-92fj)

medium Tenable Cloud Security Plugin ID 438507

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-30870)

Solution

Update the @powersync/service-sync-rules library and its related packages to version 0.33.0 or later.

See Also

https://github.com/advisories/GHSA-q6wc-xx4m-92fj

Plugin Details

Severity: Medium

ID: 438507

Version: Revision 1.9

Type: Local

Family: SCA Checks

Published: 3/9/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.49

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:N

CVSS Score Source: CVE-2026-30870

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 3/7/2026

Vulnerability Publication Date: 3/7/2026

Reference Information

CVE: CVE-2026-30870

cwe: CWE-285