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Story Generator — agentic threat model

4.0AIVSS 4.0 · Medium

The Story Generator is a low-risk, stateless text generation utility with minimal agentic capabilities, posing negligible threat to external systems but vulnerable to prompt injection and misuse for generating inappropriate content.

OWASP AIVSS score rationale

AIVSS = (CVSS_Base + AARS) × Mitigation_Factor, where AARS = (10 − CVSS_Base) × (Factor_Sum / 10) × ThM
CVSS base 3.0AARS uplift 1.01Factor sum 1.6/10Threat ×0.9Mitigation ×1.0
Autonomy of Action
0.10
Goal-Driven Planning
0.10
Self-Modification
0.00
Dynamic Tool Use
0.00
Persistent Memory
0.00
Contextual Awareness
0.20
Dynamic Identity
0.00
Multi-Agent Interactions
0.00
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⚠ not certain from listing

Not certain from the listing — likely utilizes a third-party foundation model susceptible to prompt injection, jailbreaking, and generating toxic or copyrighted content, as no custom alignment or safety tuning is detailed.

L2 · Data Operations⚠ not certain from listing

Not certain from the listing — does not appear to utilize RAG, vector databases, or persistent training data stores, meaning data poisoning risks are low, though user-inputted prompts could theoretically be logged.

L3 · Agent Frameworks✓ mapped

No complex agent framework, planning loops, or tool execution capabilities are described; the system operates as a simple single-turn text generator, eliminating tool-misuse risks.

L4 · Deployment & Infrastructure⚠ not certain from listing

Not certain from the listing — hosted as a public web application. Primary infrastructure threats include API abuse, denial of service (DoS) due to the free/no-registration model, and standard web application vulnerabilities.

L5 · Evaluation & Observability⚠ not certain from listing

Not certain from the listing — there is no mention of output filtering, input guardrails, or observability logging to detect and block adversarial prompt injections or policy-violating outputs.

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

The agent operates without registration or authentication, meaning there are no identity or access management controls. While this limits PII collection risks, it prevents user accountability and auditing.

L7 · Agent Ecosystem✓ mapped

The agent operates in complete isolation as a standalone horizontal utility, with no multi-agent coordination, marketplace integrations, or ecosystem dependencies.

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