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Security audit

Guru MCP

Security checks for vulnerabilities and agentic risk

Overview

This skill clearly documents a Guru MCP integration, including expected read and write actions, with no hidden code or persistence beyond normal token configuration.

Install this only if you intend the agent to access Guru with the permissions of the supplied token. Prefer a least-privilege Guru token where possible, and treat create/update operations as remote content changes that should be explicitly requested and reviewed before use.

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
93% confidence
Finding

The skill exposes write-capable operations (guru_create_draft and guru_update_card) and shows concrete invocation examples, but it does not clearly warn that these commands will modify remote Guru data. In an agent setting, this increases the chance of unintended or automatic changes to production knowledge content, especially because the same skill also has broad access to connected enterprise sources and presents these actions as routine workflows.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.