Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-30870

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
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ac272ccba3dee097097cfa7510ae9a8dd60660b2405a404c0a78773047d1953c
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 3 assertions

{"product":"service-core","vendor":"@powersync","versions":[{"status":"affected","version":"< 1.20.1"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4bb87db4006ce2f663fe211a77207f9dec5c27d21f761819fb66d0ddfa5dfa3f · sha256:481c3259999e73da… · /containers/cna/affected/1

{"product":"service-sync-rules","vendor":"@powersync","versions":[{"status":"affected","version":"< 0.33.0"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4bb87db4006ce2f663fe211a77207f9dec5c27d21f761819fb66d0ddfa5dfa3f · sha256:481c3259999e73da… · /containers/cna/affected/2

{"product":"powersync-service","vendor":"powersync-ja","versions":[{"status":"affected","version":"< 1.20.1"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4bb87db4006ce2f663fe211a77207f9dec5c27d21f761819fb66d0ddfa5dfa3f · sha256:481c3259999e73da… · /containers/cna/affected/0

Affected products and versions

3 source assertions
{"product":"service-core","vendor":"@powersync","versions":[{"status":"affected","version":"< 1.20.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4bb87db4006ce2f663fe211a77207f9dec5c27d21f761819fb66d0ddfa5dfa3f · sha256:481c3259999e73da… · /containers/cna/affected/1
{"product":"service-sync-rules","vendor":"@powersync","versions":[{"status":"affected","version":"< 0.33.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4bb87db4006ce2f663fe211a77207f9dec5c27d21f761819fb66d0ddfa5dfa3f · sha256:481c3259999e73da… · /containers/cna/affected/2
{"product":"powersync-service","vendor":"powersync-ja","versions":[{"status":"affected","version":"< 1.20.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4bb87db4006ce2f663fe211a77207f9dec5c27d21f761819fb66d0ddfa5dfa3f · sha256:481c3259999e73da… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4bb87db4006ce2f663fe211a77207f9dec5c27d21f761819fb66d0ddfa5dfa3f · sha256:481c3259999e73da… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-285","description":"CWE-285: Improper Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4bb87db4006ce2f663fe211a77207f9dec5c27d21f761819fb66d0ddfa5dfa3f · sha256:481c3259999e73da… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/powersync-ja/powersync-service/security/advisories/GHSA-q6wc-xx4m-92fj","tags":["x_refsource_CONFIRM"],"url":"https://github.com/powersync-ja/powersync-service/security/advisories/GHSA-q6wc-xx4m-92fj"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4bb87db4006ce2f663fe211a77207f9dec5c27d21f761819fb66d0ddfa5dfa3f · sha256:481c3259999e73da… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

← Back to CVE Explorer