Is CVE-2026-30870 actively exploited?

No active exploitation of CVE-2026-30870 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-30870 be exploited remotely?

Yes. CVE-2026-30870 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-30870?

CVE-2026-30870 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2026-30870

CWE-285Published: March 10, 2026· Updated: Mar 11, 2026

6.5

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:7.6th

Official 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.

NVD Source

Technical Analysis

CVE-2026-30870 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 6.5.