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Security audit

Recipe Create Events From Sheet

Security checks for vulnerabilities and agentic risk

Overview

This recipe clearly describes reading a Google Sheet and creating Google Calendar events, with no hidden code, persistence, or unrelated behavior found.

Before using this recipe, review the selected sheet range carefully because it can create one calendar event per row and may add attendees. Test with a small range first if the sheet contents are uncertain.

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
86% confidence
Finding

The skill performs bulk calendar creation from spreadsheet rows, which is a state-changing action that can modify user data at scale, but the description and usage guidance do not clearly warn about that side effect. This increases the risk of accidental misuse, such as creating many unwanted events or spamming attendees if sheet contents are incorrect or unreviewed.

Content

No source excerpt is available for this finding.