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ui-designer — agentic threat model

5.1AIVSS 5.1 · Medium

The ui-designer agent is a low-risk, specialized utility focused on static image analysis and prompt generation. Its lack of direct system execution capabilities or dynamic tool access limits its overall agentic risk posture to passive data exposure and prompt injection.

OWASP AIVSS score rationale

AIVSS = (CVSS_Base + AARS) × Mitigation_Factor, where AARS = (10 − CVSS_Base) × (Factor_Sum / 10) × ThM
CVSS base 4.3AARS uplift 0.76Factor sum 1.4/10Threat ×0.95Mitigation ×1.0
Autonomy of Action
0.20
Goal-Driven Planning
0.10
Self-Modification
0.00
Dynamic Tool Use
0.00
Persistent Memory
0.10
Contextual Awareness
0.30
Dynamic Identity
0.00
Multi-Agent Interactions
0.00
Non-Determinism
0.40
Opacity & Reflexivity
0.30

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 vision-language models to analyze UI screenshots. Vulnerable to adversarial image perturbations (visual prompt injection) that could manipulate the extracted design system or inject malicious instructions into the generated output prompts.

L2 · Data Operations⚠ not certain from listing

Not certain from the listing — processes image inputs and writes design-spec outputs. There is no explicit mention of vector databases, RAG, or persistent storage, suggesting a transient data lifecycle with minimal data operations risk.

L3 · Agent Frameworks✓ mapped

Orchestration is limited to a simple pipeline: reading an image, extracting features, and writing a text specification. Low risk of tool misuse or framework vulnerabilities due to the absence of active execution tools.

L4 · Deployment & Infrastructure⚠ not certain from listing

Not certain from the listing — as an open-source community skill, deployment depends entirely on the host environment. Standard containerization and input size limits are recommended to prevent denial-of-service via resource-intensive image processing.

L5 · Evaluation & Observability⚠ not certain from listing

Not certain from the listing — no built-in evaluation, logging, or guardrails are described. Lacks mechanisms to detect if the generated design prompts contain injected malicious payloads or system instructions.

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

Not certain from the listing — no identity, access control, or compliance frameworks are specified. Relies on the parent platform to enforce data privacy, especially if users upload proprietary or sensitive mockups.

L7 · Agent Ecosystem✓ mapped

Operates as an isolated, single-purpose skill. While listed in a community directory, it does not natively initiate multi-agent coordination or autonomous marketplace transactions, minimizing ecosystem risks.

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