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Security audit

Gmail Search Emails

Security checks for vulnerabilities and agentic risk

Overview

This Gmail search skill is simple and purpose-aligned, but it can access sensitive mailbox snippets under a broad trigger without an explicit consent or scoping step.

Review before installing. Only use this skill when you intend the agent to search a Gmail account, and prefer confirming the account, query, and whether snippets should be returned before running it.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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 (2)

Missing User Warnings

Medium
Confidence
97% confidence
Finding
The skill does not warn that it accesses Gmail message data, yet its output includes email headers and snippets that may contain sensitive personal or business information. Without a clear privacy warning or consent cue, users may not understand that invoking the skill can retrieve and expose mailbox contents.

Vague Triggers

Medium
Confidence
94% confidence
Finding
The activation condition is broad enough to trigger on ordinary requests to find emails or communications, which can cause the agent to access Gmail data without a clearly scoped user intent or explicit confirmation. Because this skill searches message metadata and snippets, over-triggering can expose sensitive email content in contexts where the user did not specifically authorize Gmail access.

Static analysis

No suspicious patterns detected.