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Tavily MCP — agentic threat model

6.7AIVSS 6.7 · Medium

Tavily MCP acts as a high-utility search and extraction tool for LLMs, presenting a moderate risk profile primarily driven by the ingestion of untrusted web content which can facilitate indirect prompt injection.

OWASP AIVSS score rationale

AIVSS = (CVSS_Base + AARS) × Mitigation_Factor, where AARS = (10 − CVSS_Base) × (Factor_Sum / 10) × ThM
CVSS base 6.1AARS uplift 0.98Factor sum 2.5/10Threat ×1.0Mitigation ×0.95
Autonomy of Action
0.20
Goal-Driven Planning
0.10
Self-Modification
0.00
Dynamic Tool Use
0.30
Persistent Memory
0.00
Contextual Awareness
0.40
Dynamic Identity
0.10
Multi-Agent Interactions
0.50
Non-Determinism
0.60
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⚠ not certain from listing

Not certain from the listing — The MCP server itself does not bundle a foundation model, but it feeds untrusted web content directly into a calling agent's LLM, exposing it to indirect prompt injection and adversarial manipulation.

L2 · Data Operations✓ mapped

The tool fetches external web data and extracts content. The primary threat is data poisoning of the retrieved context and lack of provenance verification for the extracted web sources.

L3 · Agent Frameworks✓ mapped

As an MCP (Model Context Protocol) server, it integrates directly into agent frameworks. Insecure tool integration or failure of the calling framework to sanitize the search results can lead to tool misuse or hijacking.

L4 · Deployment & Infrastructure✓ mapped

Requires a Tavily API key which must be kept secret. Exposure of this key or insecure hosting of the MCP server could lead to unauthorized API usage or local network exposure.

L5 · Evaluation & Observability⚠ not certain from listing

Not certain from the listing — No built-in evaluation, guardrails, or observability features are mentioned. Calling systems must implement their own logging and validation of search inputs/outputs.

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

Not certain from the listing — No compliance certifications (like SOC2) or identity/access management policies are specified beyond basic API key authentication.

L7 · Agent Ecosystem✓ mapped

Designed specifically for the MCP ecosystem to serve other agents. A compromised or manipulated search result can propagate untrusted data across a multi-agent network, causing cascading failures.

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