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Security audit

groupon-mcp

Security checks for vulnerabilities and agentic risk

Overview

This skill provides public Groupon deal searches with disclosed network requests and no account access or purchasing authority.

Groupon receives your search terms and chosen city. No login is required. The examples call grpn although the helper is named gp; correct that mismatch before use. Query fingerprints may also need updating.

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)

External Transmission

Medium
Category
Data Exfiltration
Confidence
60% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · references/graphql-queries.md (reported line 1)May include surrounding context.

md
# Groupon curl recipes

All hit `POST https://www.groupon.com/mobilenextapi/graphql` with headers
`content-type: application/json` and `apollographql-client-name: mobilenextapi`.

Static analysis

No suspicious patterns detected.