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Security audit

gcp-storage-manager

Security checks for vulnerabilities and agentic risk

Overview

This skill is a sparse Google Cloud Storage helper that asks for cloud credentials but does not clearly scope what it may do or include the script it says to run.

Review this before installing. Use only a least-privilege credential limited to the specific storage actions you intend, avoid shared shells or logs that may expose STORAGE_API_KEY, and do not rely on the skill for non-storage GCP tasks unless the missing implementation and operation scope are clarified.

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
Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (2)

Vague Triggers

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

The skill's activation guidance is very broad ('gcp related functionality', 'cloud operations'), which can cause the agent to invoke this skill in contexts beyond narrowly scoped storage tasks. In a cloud-management skill, over-broad triggering increases the chance of unnecessary credentialed actions or use in situations the user did not explicitly intend.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
92% confidence
Finding

The documentation instructs users to set a cloud credential environment variable but provides no warning about the sensitivity of the API key, least-privilege expectations, or the risk of unintended cloud actions. For a GCP storage management skill, missing credential safety guidance can lead to over-privileged key use, accidental exposure, or unsafe execution in shared environments.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.