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Security audit

NudgeBell

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed reminder-service integration that uses the user's NudgeBell API key to create and manage reminders through NudgeBell's own API.

Install only if you are comfortable giving NudgeBell reminder content and an API key for your account. Review reminders before creation because phone, SMS, and WhatsApp steps can use credits, and remember that scheduled reminders continue on NudgeBell's servers until acknowledged, paused, or cancelled.

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)

External Transmission

Medium
Category
Data Exfiltration
Content
env:
        - NUDGEBELL_API_KEY
      bins:
        - curl
    primaryEnv: NUDGEBELL_API_KEY
    emoji: "🔔"
    homepage: https://nudgebell.app
Confidence
60% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Static analysis

No suspicious patterns detected.