CVE-2026-67357: Arcadedata Arcadedb

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

ArcadeDB versions before 26.7.3 contain an information disclosure vulnerability in the MCP get_server_settings tool that leaks the arcadedb.ha.clusterToken in cleartext. Attackers with MCP access can retrieve the cluster token and use it with X-ArcadeDB-Cluster-Token and X-ArcadeDB-Forwarded-User headers to impersonate root and achieve full server compromise.

Affected products

• Arcadedata Arcadedb: before 26.7.3 (fixed in 26.7.3)

Published 2026-08-02. Last modified 2026-08-31.