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Voyager — agentic threat model

9.6AIVSS 9.6 · Critical

Voyager's reliance on dynamic code execution (GPT-4 generated code) combined with autonomous self-improvement and a persistent skill library presents a high risk of arbitrary code execution if the execution environment is not strictly sandboxed.

OWASP AIVSS score rationale

AIVSS = (CVSS_Base + AARS) × Mitigation_Factor, where AARS = (10 − CVSS_Base) × (Factor_Sum / 10) × ThM
CVSS base 8.6AARS uplift 0.95Factor sum 6.8/10Threat ×1.0Mitigation ×1.0
Autonomy of Action
1.00
Goal-Driven Planning
0.90
Self-Modification
0.80
Dynamic Tool Use
0.80
Persistent Memory
0.80
Contextual Awareness
0.70
Dynamic Identity
0.10
Multi-Agent Interactions
0.20
Non-Determinism
0.80
Opacity & Reflexivity
0.70

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

Utilizes GPT-4 for in-context learning and code generation. Primary threats include prompt injection and model reprogramming, which could lead to the generation of malicious code designed to escape the application context.

L2 · Data Operations✓ mapped

Maintains an 'ever-growing skill library' to store complex behaviors. If an attacker can poison this library or inject malicious skills, the agent will persistently execute compromised behaviors across sessions.

L3 · Agent Frameworks✓ mapped

Features an automatic curriculum and an iterative prompting mechanism that executes generated code based on environmental feedback. The framework's core mechanism of direct code execution represents a critical vulnerability if input validation or code sandboxing is absent.

L4 · Deployment & Infrastructure⚠ not certain from listing

Not certain from the listing — requires a runtime environment to execute GPT-4 generated code and interface with Minecraft. If this environment lacks strict containerization or sandboxing, code execution vulnerabilities could lead to host system compromise.

L5 · Evaluation & Observability⚠ not certain from listing

Not certain from the listing — mentions using execution errors and environmental feedback for self-improvement, but there is no indication of security-focused logging, anomaly detection, or guardrails to intercept malicious payloads.

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

Not certain from the listing — as an open-source gaming and research agent, it likely lacks enterprise-grade access controls, authentication mechanisms, or compliance alignments.

L7 · Agent Ecosystem⚠ not certain from listing

Not certain from the listing — primarily operates as a single-agent system within Minecraft, but could face multi-agent or player-to-agent threats if deployed on public multiplayer servers where external entities can influence its environment.

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

These scores are auto-generated from public information (the agent's own listing, docs, and repository) using the canonical OWASP AIVSS formula and the MAESTRO framework — an estimate for guidance, not a penetration test, audit, or certification. See the scoring methodology. Are you the vendor? Factual corrections are free.