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DBHub — agentic threat model

6.4AIVSS 6.4 · Medium

DBHub acts as a centralized database gateway exposing read-only SQL query capabilities to LLMs. Its primary risk is high-impact data exfiltration of sensitive database rows and schema exposure if query scoping or SQL safety checks are bypassed.

OWASP AIVSS score rationale

AIVSS = (CVSS_Base + AARS) × Mitigation_Factor, where AARS = (10 − CVSS_Base) × (Factor_Sum / 10) × ThM
CVSS base 7.5AARS uplift 0.45Factor sum 1.8/10Threat ×1.0Mitigation ×0.8
Autonomy of Action
0.30
Goal-Driven Planning
0.10
Self-Modification
0.00
Dynamic Tool Use
0.60
Persistent Memory
0.00
Contextual Awareness
0.10
Dynamic Identity
0.20
Multi-Agent Interactions
0.10
Non-Determinism
0.20
Opacity & Reflexivity
0.20

Scored with the canonical OWASP AIVSS formula (AIVSS calculator reference); agentic risk factors estimated from the agent’s described capabilities.

MAESTRO 7-layer threat model

Per-layer threats for this agent. Layers tagged “not certain from listing” are general, caveated commentary where the public description didn’t pin that layer.

L1 · Foundation Models⚠ not certain from listing

Not certain from the listing — DBHub is an MCP tool gateway and does not bundle its own foundation model; model-level threats depend entirely on the external LLM hosting the agent.

L2 · Data Operations✓ mapped

Directly interfaces with PostgreSQL, MySQL, SQLite, and DuckDB. The primary threat is data exfiltration of sensitive rows and unauthorized schema/table structure discovery through LLM-driven queries.

L3 · Agent Frameworks✓ mapped

Exposes database tools via the Model Context Protocol (MCP). Threat includes tool misuse where prompt injection leads the orchestrating agent to execute unintended read-only SQL queries that bypass safety checks.

L4 · Deployment & Infrastructure✓ mapped

Centralizes multiple database credentials on a single server. Threat includes credential theft from the DBHub host or lateral movement to connected database engines if the gateway server is compromised.

L5 · Evaluation & Observability⚠ not certain from listing

Not certain from the listing — While 'built-in SQL safety checks' are mentioned, the listing does not detail query logging, auditing, or anomaly detection mechanisms to flag suspicious data harvesting.

L6 · Security & Compliance (cross-cutting)✓ mapped

Relies on connection credentials and query scoping to define its risk profile. Threat includes insufficient access controls (lack of row-level or table-level restrictions) allowing users to query unauthorized data.

L7 · Agent Ecosystem⚠ not certain from listing

Not certain from the listing — DBHub acts as a single-agent tool provider; multi-agent trust abuse or cascading failures depend on the broader ecosystem in which this MCP server is deployed.

MAESTRO — the 7-layer agentic threat-modeling framework (Cloud Security Alliance / Ken Huang).