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Security audit

Google SERP Scholar Author API

Security checks for vulnerabilities and agentic risk

Overview

This skill is a narrow Just Serp API wrapper for looking up Google Scholar author data, with no evidence of hidden persistence, local data access, or destructive behavior.

Before installing, confirm you trust Just Serp API with the Google Scholar author IDs and query parameters you submit, and keep JUST_SERP_API_KEY in the environment rather than sharing it in chat. The main improvement would be an explicit permission declaration limiting the helper to the required API endpoint.

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
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • 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 (1)

Undeclared Tool Scope

Medium
Category
MCP Least Privilege
Confidence
93% confidence
Finding

The skill invokes a network-capable helper (node {baseDir}/bin/run.mjs) that sends requests to an external API, but the manifest does not declare an explicit tool scope such as permissions or allowed-tools. This weakens least-privilege controls and makes it harder for the host platform or reviewers to understand and constrain the skill's runtime capabilities, increasing the risk of unintended external data transmission or broader abuse if the helper is modified.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.