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Wren AI — agentic threat model

9.1AIVSS 9.1 · Critical

Wren AI presents a moderate-to-high risk profile primarily centered on data security, as its Text-to-SQL capabilities and database integrations could be exploited via prompt injection to unauthorizedly access or manipulate sensitive business data.

OWASP AIVSS score rationale

AIVSS = (CVSS_Base + AARS) × Mitigation_Factor, where AARS = (10 − CVSS_Base) × (Factor_Sum / 10) × ThM
CVSS base 8.5AARS uplift 0.65Factor sum 4.3/10Threat ×1.0Mitigation ×1.0
Autonomy of Action
0.40
Goal-Driven Planning
0.30
Self-Modification
0.50
Dynamic Tool Use
0.60
Persistent Memory
0.40
Contextual Awareness
0.70
Dynamic Identity
0.20
Multi-Agent Interactions
0.10
Non-Determinism
0.60
Opacity & Reflexivity
0.50

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✓ mapped

Wren AI supports multiple LLMs for Text-to-SQL generation, making it vulnerable to adversarial prompt injections that could manipulate the generated SQL queries to bypass intended data boundaries or leak schema information.

L2 · Data Operations✓ mapped

The semantic engine architecture holds metadata and context about business schemas. Threats include schema exfiltration, unauthorized data access via manipulated semantic mappings, and potential poisoning of the semantic layer to misdirect queries.

L3 · Agent Frameworks✓ mapped

The orchestration framework translates natural language to SQL and utilizes a self-learning feedback loop. Vulnerabilities include insecure tool integration where the agent might execute destructive SQL commands if database connection permissions are overly permissive.

L4 · Deployment & Infrastructure⚠ not certain from listing

Not certain from the listing — as an open-source tool integrating with databases, deployment risks depend heavily on self-hosted infrastructure security, database credential storage, and network isolation between the LLM connector and internal databases.

L5 · Evaluation & Observability⚠ not certain from listing

Not certain from the listing — the 'self-learning feedback loop' implies some monitoring of query success, but there is no explicit mention of SQL validation guardrails, query sanitization, or logging mechanisms to detect malicious prompt injections.

L6 · Security & Compliance (cross-cutting)⚠ not certain from listing

Not certain from the listing — there is no detailed information on how user authentication maps to database-level permissions (RBAC), potentially allowing unauthorized users to query sensitive tables if the agent uses a single high-privilege database credential.

L7 · Agent Ecosystem⚠ not certain from listing

Not certain from the listing — Wren AI operates primarily as a standalone Text-to-SQL utility and does not explicitly detail multi-agent collaboration or marketplace integrations that would introduce cascading ecosystem risks.

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