excalidraw

Warn

Audited by Gen Agent Trust Hub on Feb 17, 2026

Risk Level: MEDIUMCOMMAND_EXECUTIONDATA_EXFILTRATION
Full Analysis
  • [COMMAND_EXECUTION] (MEDIUM): The skill uses computer and tabs_context_mcp tools to perform browser automation, including clicking, typing, and executing arbitrary JavaScript on https://excalidraw.com. While intended for drawing, these capabilities could be repurposed to interact with other open tabs or sensitive browser data if the agent is misled by malicious input.
  • [DATA_EXFILTRATION] (MEDIUM): The skill frequently takes screenshots (action: "screenshot") and reads page state to drive its logic. This creates a risk of data exposure if the agent captures sensitive information visible in the browser (e.g., other tabs, extensions, or logged-in user data) and passes it back into the model context.
  • **[INDIRECT PROMPT INJECTION] (HIGH
  • Risk Factor):** This skill has a high-risk surface (Category 8) because it ingests complex data (Excalidraw element definitions) and has high-privilege write capabilities (browser automation). A malicious drawing definition could theoretically attempt to break out of the intended schema to influence the agent's next steps in the automation sequence.
  • [DYNAMIC EXECUTION] (MEDIUM): The skill relies on injecting and executing multiple async JavaScript blocks to manage focus and clipboard state. This is a form of runtime code generation that could be exploited to run unauthorized scripts in the context of the user's browser session.
Audit Metadata
Risk Level
MEDIUM
Analyzed
Feb 17, 2026, 04:31 AM