monday.com MCP Server — agentic threat model
The monday.com MCP Server exposes high-value work-management data and board modification capabilities to LLMs, presenting a significant prompt-injection surface that could lead to unauthorized data manipulation or exfiltration via OAuth-scoped access.
OWASP AIVSS score rationale
| Autonomy of Action | 0.60 | |
| Goal-Driven Planning | 0.40 | |
| Self-Modification | 0.10 | |
| Dynamic Tool Use | 0.70 | |
| Persistent Memory | 0.30 | |
| Contextual Awareness | 0.50 | |
| Dynamic Identity | 0.60 | |
| Multi-Agent Interactions | 0.20 | |
| 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.
The agent relies on external LLMs via the Model Context Protocol (MCP). The primary threat is prompt injection via untrusted text stored in board items or updates, which can hijack the model's instructions.
Data operations involve reading and writing to monday.com boards and updates. Poisoning of board data or updates can serve as an indirect prompt injection vector, leading to unauthorized data exfiltration.
The MCP server acts as the tool integration layer. Insecure tool integration or lack of input validation on board/item CRUD operations could allow an LLM to execute unintended API calls.
Not certain from the listing — The hosting environment of the MCP server (local or cloud) is not specified, but it requires secure network paths to communicate with both the LLM client and the monday.com API.
Not certain from the listing — There is no mention of built-in guardrails, logging, or anomaly detection to monitor the queries and mutations being executed through the MCP server.
OAuth scopes govern access to work-management data, providing a critical security boundary. However, if the OAuth token has broad write permissions, the agent inherits those capabilities, increasing the blast radius.
As an MCP server, this tool is designed to be called by other agents. A compromised orchestrator agent or a malicious multi-agent workflow could abuse the monday.com toolset to modify corporate workflows.
MAESTRO — the 7-layer agentic threat-modeling framework (Cloud Security Alliance / Ken Huang).