CVE-2026-93593: Arcadedata Arcadedb

High severity, CVSS 8.1. EPSS: 0.4% chance of exploitation in the next 30 days.

ArcadeDB before 26.9.1 fails to enforce security-group types ACL entries for TimeSeries types because the ACL resolver builds permissions from bucket IDs, but TimeSeries types do not own normal record buckets. An authenticated low-privilege user can read or insert TimeSeries samples despite explicit deny rules by exploiting the missing type-name-based access check that causes permission lookups to fail open.

Affected products

• Arcadedata Arcadedb: before 26.9.1 (fixed in 26.9.1)

Published 2026-09-18. Last modified 2026-09-22.