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Security audit

Open Notebook Skill

Security checks for vulnerabilities and agentic risk

Overview

This skill is a small, disclosed local open-notebook integration that saves user-provided notes to a local notebook service.

Install only if you intend agents to store selected research notes in your local open-notebook instance. Do not submit passwords, API keys, regulated data, or proprietary material unless your local open-notebook storage, access controls, and retention practices 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
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (1)

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The skill explicitly encourages saving and querying knowledge across sessions via HTTP endpoints on localhost, but it does not warn users that submitted notebook content is transmitted to a local API and persisted. This can lead agents or operators to send sensitive prompts, credentials, or proprietary data under the mistaken assumption that the integration is ephemeral or purely in-memory.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.