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← GistPad-MCP (lostintangent/gistpad-mcp)

GistPad-MCP (lostintangent/gistpad-mcp) — agentic threat model

7.2AIVSS 7.2 · High

GistPad-MCP introduces moderate security risks by granting agents read/write access to GitHub Gists, potentially exposing sensitive personal knowledge, daily notes, and reusable prompts to unauthorized modification or exfiltration if the underlying LLM is compromised.

OWASP AIVSS score rationale

AIVSS = (CVSS_Base + AARS) × Mitigation_Factor, where AARS = (10 − CVSS_Base) × (Factor_Sum / 10) × ThM
CVSS base 6.4AARS uplift 1.55Factor sum 4.3/10Threat ×1.0Mitigation ×0.9
Autonomy of Action
0.40
Goal-Driven Planning
0.20
Self-Modification
0.30
Dynamic Tool Use
0.50
Persistent Memory
0.70
Contextual Awareness
0.60
Dynamic Identity
0.40
Multi-Agent Interactions
0.30
Non-Determinism
0.50
Opacity & Reflexivity
0.40

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 — GistPad-MCP is an integration layer and does not specify the underlying foundation model. However, the model is susceptible to prompt injection attacks that could trick it into exfiltrating or corrupting Gist data.

L2 · Data Operations✓ mapped

The agent operates directly on GitHub Gists as its primary data store. The main threats are data exfiltration of sensitive personal notes and knowledge-base poisoning, where malicious content is injected into Gists to influence future agent decisions.

L3 · Agent Frameworks✓ mapped

The agent framework orchestrates read/write operations to GitHub. Insecure tool integration or lack of input validation could allow an attacker to manipulate the file paths or content of the Gists being written or read.

L4 · Deployment & Infrastructure✓ mapped

The deployment relies on the Model Context Protocol (MCP) host environment. The primary infrastructure threat is the exposure or theft of the GitHub personal access token used to authenticate and authorize Gist operations.

L5 · Evaluation & Observability⚠ not certain from listing

Not certain from the listing — There is no mention of built-in logging, auditing, or guardrails to monitor Gist read/write activities, creating potential blind spots for unauthorized data modifications.

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

Security is heavily dependent on the scope of the GitHub token. If the token is over-permissioned (e.g., full repo access instead of just 'gist' scope), a compromise of the agent leads to broader GitHub account exposure.

L7 · Agent Ecosystem✓ mapped

As an MCP tool, this agent can be called by other orchestrator agents. This introduces multi-agent trust risks where a compromised upstream agent could abuse GistPad-MCP to silently exfiltrate user data.

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