Incorrect Authorization Affecting @powersync/service-sync-rules package, versions <0.33.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published12 Mar 2026
- disclosed10 Mar 2026
- creditUnknown
Introduced: 10 Mar 2026
CVE-2026-30870 (opens in a new tab)How to fix?
Upgrade @powersync/service-sync-rules to version 0.33.0 or higher.
Overview
@powersync/service-sync-rules is an A library containing logic for PowerSync sync rules.
Affected versions of this package are vulnerable to Incorrect Authorization in the stream synchronization with config.edition: 3 and subquery filters are used without partitioning the result set. An attacker can access data that should be restricted by leveraging authenticated access to sync streams configured in this manner.