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canvas-design — agentic threat model

5.4AIVSS 5.4 · Medium

The canvas-design agent presents a low-to-moderate risk profile as a specialized plugin for Claude Code, focusing on static visual art generation with limited real-world action capabilities beyond file exports.

OWASP AIVSS score rationale

AIVSS = (CVSS_Base + AARS) × Mitigation_Factor, where AARS = (10 − CVSS_Base) × (Factor_Sum / 10) × ThM
CVSS base 4.3AARS uplift 1.73Factor sum 3.2/10Threat ×0.95Mitigation ×0.9
Autonomy of Action
0.30
Goal-Driven Planning
0.40
Self-Modification
0.10
Dynamic Tool Use
0.30
Persistent Memory
0.20
Contextual Awareness
0.40
Dynamic Identity
0.10
Multi-Agent Interactions
0.20
Non-Determinism
0.70
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

Relies on Claude Code's underlying foundation models. Vulnerable to prompt injection that could bypass design-philosophy constraints or generate inappropriate visual content.

L2 · Data Operations⚠ not certain from listing

Not certain from the listing — likely processes user-provided design assets or text prompts. Risk of local file path traversal if the agent reads local images or data to guide generation.

L3 · Agent Frameworks✓ mapped

Orchestrates the generation flow and exports PNG/PDF files. Threat of tool misuse if the file-writing tools can be manipulated to overwrite critical system files instead of exporting art.

L4 · Deployment & Infrastructure✓ mapped

Runs as a plugin within Claude Code on the user's local environment. Security depends heavily on the host environment's sandboxing and permissions granted to Claude Code.

L5 · Evaluation & Observability⚠ not certain from listing

Not certain from the listing — likely lacks dedicated guardrails or observability for aesthetic output generation, relying instead on Claude's default safety filters.

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

As an open-source plugin, it lacks enterprise compliance certifications. Access control is bound to the local user's terminal permissions.

L7 · Agent Ecosystem✓ mapped

Operates as a plugin within the Claude Code ecosystem. Potential risk of cascading failures if chained with other developer agents that have write access to the codebase.

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