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Security audit

Excaliclaw

Security checks for vulnerabilities and agentic risk

Overview

This skill is a diagram-authoring guide for Excalidraw/OpenClaw and its environment-changing steps are disclosed and gated on user approval.

Before installing, note that the skill may export diagrams to an editable excalidraw.com link and may ask to install or configure an Excalidraw MCP if it is missing. Only approve setup or external sharing when the diagram content and environment change are acceptable.

A.I.G

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs

SkillSpector

Vulnerability Patterns
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (1)

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
75% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 234)May include surrounding context.

md
This maps to Excalidraw's hand-drawn Excalifont in normal Excalidraw scenes.

If the user asks for font options, verify the current Excalidraw element model before giving exact numeric values. Common Excalidraw families are hand-drawn/Excalifont, normal/sans, code/monospace, and comic-style, but do not promise exact IDs without checking.

## Diagram Quality Checklist

Static analysis

No suspicious patterns detected.