CVE-2026-93595: Arcadedata Arcadedb

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

ArcadeDB before 26.9.1 contains an access control bypass vulnerability in the query_database tool exposed through the AI chat endpoints. The tool executes queries without binding the authenticated principal to DatabaseContext, causing per-type and per-bucket ACL checks to silently no-op and allowing authenticated users to read data they are explicitly denied at the per-type level. Attackers can prompt the AI assistant to execute queries against restricted types or buckets to retrieve sensitive data that would be rejected through normal query endpoints.

Affected products

• Arcadedata Arcadedb: before 26.9.1 (fixed in 26.9.1)

Published 2026-09-18. Last modified 2026-09-21.